openssl/crypto/aes/aes_core.c

/*
 * Copyright 2002-2020 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

/**
 * rijndael-alg-fst.c
 *
 * @version 3.0 (December 2000)
 *
 * Optimised ANSI C code for the Rijndael cipher (now AES)
 *
 * @author Vincent Rijmen
 * @author Antoon Bosselaers
 * @author Paulo Barreto
 *
 * This code is hereby placed in the public domain.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/* Note: rewritten a little bit to provide error control and an OpenSSL-
   compatible API */

/*
 * AES low level APIs are deprecated for public use, but still ok for internal
 * use where we're using them to implement the higher level EVP interface, as is
 * the case here.
 */
#include "internal/deprecated.h"

#include <assert.h>

#include <stdlib.h>
#include <openssl/crypto.h>
#include <openssl/aes.h>
#include "aes_local.h"

#if !defined(OPENSSL_NO_AES_CONST_TIME) && !defined(AES_ASM)
typedef union {
    unsigned char b[8];
    u32 w[2];
    u64 d;
} uni;

/*
 * Compute w := (w * x) mod (x^8 + x^4 + x^3 + x^1 + 1)
 * Therefore the name "xtime".
 */
static void XtimeWord(u32 *w)
{
    u32 a, b;

    a = *w;
    b = a & 0x80808080u;
    a ^= b;
    b -= b >> 7;
    b &= 0x1B1B1B1Bu;
    b ^= a << 1;
    *w = b;
}

static void XtimeLong(u64 *w)
{
    u64 a, b;

    a = *w;
    b = a & 0x8080808080808080u;
    a ^= b;
    b -= b >> 7;
    b &= 0x1B1B1B1B1B1B1B1Bu;
    b ^= a << 1;
    *w = b;
}

/*
 * This computes w := S * w ^ -1 + c, where c = {01100011}.
 * Instead of using GF(2^8) mod (x^8+x^4+x^3+x+1} we do the inversion
 * in GF(GF(GF(2^2)^2)^2) mod (X^2+X+8)
 * and GF(GF(2^2)^2) mod (X^2+X+2)
 * and GF(2^2) mod (X^2+X+1)
 * The first part of the algorithm below transfers the coordinates
 * {0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80} =>
 * {1,Y,Y^2,Y^3,Y^4,Y^5,Y^6,Y^7} with Y=0x41:
 * {0x01,0x41,0x66,0x6c,0x56,0x9a,0x58,0xc4}
 * The last part undoes the coordinate transfer and the final affine
 * transformation S:
 * b[i] = b[i] + b[(i+4)%8] + b[(i+5)%8] + b[(i+6)%8] + b[(i+7)%8] + c[i]
 * in one step.
 * The multiplication in GF(2^2^2^2) is done in ordinary coords:
 * A = (a0*1 + a1*x^4)
 * B = (b0*1 + b1*x^4)
 * AB = ((a0*b0 + 8*a1*b1)*1 + (a1*b0 + (a0+a1)*b1)*x^4)
 * When A = (a0,a1) is given we want to solve AB = 1:
 * (a) 1 = a0*b0 + 8*a1*b1
 * (b) 0 = a1*b0 + (a0+a1)*b1
 * => multiply (a) by a1 and (b) by a0
 * (c) a1 = a1*a0*b0 + (8*a1*a1)*b1
 * (d) 0 = a1*a0*b0 + (a0*a0+a1*a0)*b1
 * => add (c) + (d)
 * (e) a1 = (a0*a0 + a1*a0 + 8*a1*a1)*b1
 * => therefore
 * b1 = (a0*a0 + a1*a0 + 8*a1*a1)^-1 * a1
 * => and adding (a1*b0) to (b) we get
 * (f) a1*b0 = (a0+a1)*b1
 * => therefore
 * b0 = (a0*a0 + a1*a0 + 8*a1*a1)^-1 * (a0+a1)
 * Note this formula also works for the case
 * (a0+a1)*a0 + 8*a1*a1 = 0
 * if the inverse element for 0^-1 is mapped to 0.
 * Repeat the same for GF(2^2^2) and GF(2^2).
 * We get the following algorithm:
 * inv8(a0,a1):
 *   x0 = a0^a1
 *   [y0,y1] = mul4([x0,a1],[a0,a1]); (*)
 *   y1 = mul4(8,y1);
 *   t = inv4(y0^y1);
 *   [b0,b1] = mul4([x0,a1],[t,t]); (*)
 *   return [b0,b1];
 * The non-linear multiplies (*) can be done in parallel at no extra cost.
 */
static void SubWord(u32 *w)
{
    u32 x, y, a1, a2, a3, a4, a5, a6;

    x = *w;
    y = ((x & 0xFEFEFEFEu) >> 1) | ((x & 0x01010101u) << 7);
    x &= 0xDDDDDDDDu;
    x ^= y & 0x57575757u;
    y = ((y & 0xFEFEFEFEu) >> 1) | ((y & 0x01010101u) << 7);
    x ^= y & 0x1C1C1C1Cu;
    y = ((y & 0xFEFEFEFEu) >> 1) | ((y & 0x01010101u) << 7);
    x ^= y & 0x4A4A4A4Au;
    y = ((y & 0xFEFEFEFEu) >> 1) | ((y & 0x01010101u) << 7);
    x ^= y & 0x42424242u;
    y = ((y & 0xFEFEFEFEu) >> 1) | ((y & 0x01010101u) << 7);
    x ^= y & 0x64646464u;
    y = ((y & 0xFEFEFEFEu) >> 1) | ((y & 0x01010101u) << 7);
    x ^= y & 0xE0E0E0E0u;
    a1 = x;
    a1 ^= (x & 0xF0F0F0F0u) >> 4;
    a2 = ((x & 0xCCCCCCCCu) >> 2) | ((x & 0x33333333u) << 2);
    a3 = x & a1;
    a3 ^= (a3 & 0xAAAAAAAAu) >> 1;
    a3 ^= (((x << 1) & a1) ^ ((a1 << 1) & x)) & 0xAAAAAAAAu;
    a4 = a2 & a1;
    a4 ^= (a4 & 0xAAAAAAAAu) >> 1;
    a4 ^= (((a2 << 1) & a1) ^ ((a1 << 1) & a2)) & 0xAAAAAAAAu;
    a5 = (a3 & 0xCCCCCCCCu) >> 2;
    a3 ^= ((a4 << 2) ^ a4) & 0xCCCCCCCCu;
    a4 = a5 & 0x22222222u;
    a4 |= a4 >> 1;
    a4 ^= (a5 << 1) & 0x22222222u;
    a3 ^= a4;
    a5 = a3 & 0xA0A0A0A0u;
    a5 |= a5 >> 1;
    a5 ^= (a3 << 1) & 0xA0A0A0A0u;
    a4 = a5 & 0xC0C0C0C0u;
    a6 = a4 >> 2;
    a4 ^= (a5 << 2) & 0xC0C0C0C0u;
    a5 = a6 & 0x20202020u;
    a5 |= a5 >> 1;
    a5 ^= (a6 << 1) & 0x20202020u;
    a4 |= a5;
    a3 ^= a4 >> 4;
    a3 &= 0x0F0F0F0Fu;
    a2 = a3;
    a2 ^= (a3 & 0x0C0C0C0Cu) >> 2;
    a4 = a3 & a2;
    a4 ^= (a4 & 0x0A0A0A0A0Au) >> 1;
    a4 ^= (((a3 << 1) & a2) ^ ((a2 << 1) & a3)) & 0x0A0A0A0Au;
    a5 = a4 & 0x08080808u;
    a5 |= a5 >> 1;
    a5 ^= (a4 << 1) & 0x08080808u;
    a4 ^= a5 >> 2;
    a4 &= 0x03030303u;
    a4 ^= (a4 & 0x02020202u) >> 1;
    a4 |= a4 << 2;
    a3 = a2 & a4;
    a3 ^= (a3 & 0x0A0A0A0Au) >> 1;
    a3 ^= (((a2 << 1) & a4) ^ ((a4 << 1) & a2)) & 0x0A0A0A0Au;
    a3 |= a3 << 4;
    a2 = ((a1 & 0xCCCCCCCCu) >> 2) | ((a1 & 0x33333333u) << 2);
    x = a1 & a3;
    x ^= (x & 0xAAAAAAAAu) >> 1;
    x ^= (((a1 << 1) & a3) ^ ((a3 << 1) & a1)) & 0xAAAAAAAAu;
    a4 = a2 & a3;
    a4 ^= (a4 & 0xAAAAAAAAu) >> 1;
    a4 ^= (((a2 << 1) & a3) ^ ((a3 << 1) & a2)) & 0xAAAAAAAAu;
    a5 = (x & 0xCCCCCCCCu) >> 2;
    x ^= ((a4 << 2) ^ a4) & 0xCCCCCCCCu;
    a4 = a5 & 0x22222222u;
    a4 |= a4 >> 1;
    a4 ^= (a5 << 1) & 0x22222222u;
    x ^= a4;
    y = ((x & 0xFEFEFEFEu) >> 1) | ((x & 0x01010101u) << 7);
    x &= 0x39393939u;
    x ^= y & 0x3F3F3F3Fu;
    y = ((y & 0xFCFCFCFCu) >> 2) | ((y & 0x03030303u) << 6);
    x ^= y & 0x97979797u;
    y = ((y & 0xFEFEFEFEu) >> 1) | ((y & 0x01010101u) << 7);
    x ^= y & 0x9B9B9B9Bu;
    y = ((y & 0xFEFEFEFEu) >> 1) | ((y & 0x01010101u) << 7);
    x ^= y & 0x3C3C3C3Cu;
    y = ((y & 0xFEFEFEFEu) >> 1) | ((y & 0x01010101u) << 7);
    x ^= y & 0xDDDDDDDDu;
    y = ((y & 0xFEFEFEFEu) >> 1) | ((y & 0x01010101u) << 7);
    x ^= y & 0x72727272u;
    x ^= 0x63636363u;
    *w = x;
}

static void SubLong(u64 *w)
{
    u64 x, y, a1, a2, a3, a4, a5, a6;

    x = *w;
    y = ((x & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((x & 0x0101010101010101u) << 7);
    x &= 0xDDDDDDDDDDDDDDDDu;
    x ^= y & 0x5757575757575757u;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0x1C1C1C1C1C1C1C1Cu;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0x4A4A4A4A4A4A4A4Au;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0x4242424242424242u;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0x6464646464646464u;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0xE0E0E0E0E0E0E0E0u;
    a1 = x;
    a1 ^= (x & 0xF0F0F0F0F0F0F0F0u) >> 4;
    a2 = ((x & 0xCCCCCCCCCCCCCCCCu) >> 2) | ((x & 0x3333333333333333u) << 2);
    a3 = x & a1;
    a3 ^= (a3 & 0xAAAAAAAAAAAAAAAAu) >> 1;
    a3 ^= (((x << 1) & a1) ^ ((a1 << 1) & x)) & 0xAAAAAAAAAAAAAAAAu;
    a4 = a2 & a1;
    a4 ^= (a4 & 0xAAAAAAAAAAAAAAAAu) >> 1;
    a4 ^= (((a2 << 1) & a1) ^ ((a1 << 1) & a2)) & 0xAAAAAAAAAAAAAAAAu;
    a5 = (a3 & 0xCCCCCCCCCCCCCCCCu) >> 2;
    a3 ^= ((a4 << 2) ^ a4) & 0xCCCCCCCCCCCCCCCCu;
    a4 = a5 & 0x2222222222222222u;
    a4 |= a4 >> 1;
    a4 ^= (a5 << 1) & 0x2222222222222222u;
    a3 ^= a4;
    a5 = a3 & 0xA0A0A0A0A0A0A0A0u;
    a5 |= a5 >> 1;
    a5 ^= (a3 << 1) & 0xA0A0A0A0A0A0A0A0u;
    a4 = a5 & 0xC0C0C0C0C0C0C0C0u;
    a6 = a4 >> 2;
    a4 ^= (a5 << 2) & 0xC0C0C0C0C0C0C0C0u;
    a5 = a6 & 0x2020202020202020u;
    a5 |= a5 >> 1;
    a5 ^= (a6 << 1) & 0x2020202020202020u;
    a4 |= a5;
    a3 ^= a4 >> 4;
    a3 &= 0x0F0F0F0F0F0F0F0Fu;
    a2 = a3;
    a2 ^= (a3 & 0x0C0C0C0C0C0C0C0Cu) >> 2;
    a4 = a3 & a2;
    a4 ^= (a4 & 0x0A0A0A0A0A0A0A0Au) >> 1;
    a4 ^= (((a3 << 1) & a2) ^ ((a2 << 1) & a3)) & 0x0A0A0A0A0A0A0A0Au;
    a5 = a4 & 0x0808080808080808u;
    a5 |= a5 >> 1;
    a5 ^= (a4 << 1) & 0x0808080808080808u;
    a4 ^= a5 >> 2;
    a4 &= 0x0303030303030303u;
    a4 ^= (a4 & 0x0202020202020202u) >> 1;
    a4 |= a4 << 2;
    a3 = a2 & a4;
    a3 ^= (a3 & 0x0A0A0A0A0A0A0A0Au) >> 1;
    a3 ^= (((a2 << 1) & a4) ^ ((a4 << 1) & a2)) & 0x0A0A0A0A0A0A0A0Au;
    a3 |= a3 << 4;
    a2 = ((a1 & 0xCCCCCCCCCCCCCCCCu) >> 2) | ((a1 & 0x3333333333333333u) << 2);
    x = a1 & a3;
    x ^= (x & 0xAAAAAAAAAAAAAAAAu) >> 1;
    x ^= (((a1 << 1) & a3) ^ ((a3 << 1) & a1)) & 0xAAAAAAAAAAAAAAAAu;
    a4 = a2 & a3;
    a4 ^= (a4 & 0xAAAAAAAAAAAAAAAAu) >> 1;
    a4 ^= (((a2 << 1) & a3) ^ ((a3 << 1) & a2)) & 0xAAAAAAAAAAAAAAAAu;
    a5 = (x & 0xCCCCCCCCCCCCCCCCu) >> 2;
    x ^= ((a4 << 2) ^ a4) & 0xCCCCCCCCCCCCCCCCu;
    a4 = a5 & 0x2222222222222222u;
    a4 |= a4 >> 1;
    a4 ^= (a5 << 1) & 0x2222222222222222u;
    x ^= a4;
    y = ((x & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((x & 0x0101010101010101u) << 7);
    x &= 0x3939393939393939u;
    x ^= y & 0x3F3F3F3F3F3F3F3Fu;
    y = ((y & 0xFCFCFCFCFCFCFCFCu) >> 2) | ((y & 0x0303030303030303u) << 6);
    x ^= y & 0x9797979797979797u;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0x9B9B9B9B9B9B9B9Bu;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0x3C3C3C3C3C3C3C3Cu;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0xDDDDDDDDDDDDDDDDu;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0x7272727272727272u;
    x ^= 0x6363636363636363u;
    *w = x;
}

/*
 * This computes w := (S^-1 * (w + c))^-1
 */
static void InvSubLong(u64 *w)
{
    u64 x, y, a1, a2, a3, a4, a5, a6;

    x = *w;
    x ^= 0x6363636363636363u;
    y = ((x & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((x & 0x0101010101010101u) << 7);
    x &= 0xFDFDFDFDFDFDFDFDu;
    x ^= y & 0x5E5E5E5E5E5E5E5Eu;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0xF3F3F3F3F3F3F3F3u;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0xF5F5F5F5F5F5F5F5u;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0x7878787878787878u;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0x7777777777777777u;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0x1515151515151515u;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0xA5A5A5A5A5A5A5A5u;
    a1 = x;
    a1 ^= (x & 0xF0F0F0F0F0F0F0F0u) >> 4;
    a2 = ((x & 0xCCCCCCCCCCCCCCCCu) >> 2) | ((x & 0x3333333333333333u) << 2);
    a3 = x & a1;
    a3 ^= (a3 & 0xAAAAAAAAAAAAAAAAu) >> 1;
    a3 ^= (((x << 1) & a1) ^ ((a1 << 1) & x)) & 0xAAAAAAAAAAAAAAAAu;
    a4 = a2 & a1;
    a4 ^= (a4 & 0xAAAAAAAAAAAAAAAAu) >> 1;
    a4 ^= (((a2 << 1) & a1) ^ ((a1 << 1) & a2)) & 0xAAAAAAAAAAAAAAAAu;
    a5 = (a3 & 0xCCCCCCCCCCCCCCCCu) >> 2;
    a3 ^= ((a4 << 2) ^ a4) & 0xCCCCCCCCCCCCCCCCu;
    a4 = a5 & 0x2222222222222222u;
    a4 |= a4 >> 1;
    a4 ^= (a5 << 1) & 0x2222222222222222u;
    a3 ^= a4;
    a5 = a3 & 0xA0A0A0A0A0A0A0A0u;
    a5 |= a5 >> 1;
    a5 ^= (a3 << 1) & 0xA0A0A0A0A0A0A0A0u;
    a4 = a5 & 0xC0C0C0C0C0C0C0C0u;
    a6 = a4 >> 2;
    a4 ^= (a5 << 2) & 0xC0C0C0C0C0C0C0C0u;
    a5 = a6 & 0x2020202020202020u;
    a5 |= a5 >> 1;
    a5 ^= (a6 << 1) & 0x2020202020202020u;
    a4 |= a5;
    a3 ^= a4 >> 4;
    a3 &= 0x0F0F0F0F0F0F0F0Fu;
    a2 = a3;
    a2 ^= (a3 & 0x0C0C0C0C0C0C0C0Cu) >> 2;
    a4 = a3 & a2;
    a4 ^= (a4 & 0x0A0A0A0A0A0A0A0Au) >> 1;
    a4 ^= (((a3 << 1) & a2) ^ ((a2 << 1) & a3)) & 0x0A0A0A0A0A0A0A0Au;
    a5 = a4 & 0x0808080808080808u;
    a5 |= a5 >> 1;
    a5 ^= (a4 << 1) & 0x0808080808080808u;
    a4 ^= a5 >> 2;
    a4 &= 0x0303030303030303u;
    a4 ^= (a4 & 0x0202020202020202u) >> 1;
    a4 |= a4 << 2;
    a3 = a2 & a4;
    a3 ^= (a3 & 0x0A0A0A0A0A0A0A0Au) >> 1;
    a3 ^= (((a2 << 1) & a4) ^ ((a4 << 1) & a2)) & 0x0A0A0A0A0A0A0A0Au;
    a3 |= a3 << 4;
    a2 = ((a1 & 0xCCCCCCCCCCCCCCCCu) >> 2) | ((a1 & 0x3333333333333333u) << 2);
    x = a1 & a3;
    x ^= (x & 0xAAAAAAAAAAAAAAAAu) >> 1;
    x ^= (((a1 << 1) & a3) ^ ((a3 << 1) & a1)) & 0xAAAAAAAAAAAAAAAAu;
    a4 = a2 & a3;
    a4 ^= (a4 & 0xAAAAAAAAAAAAAAAAu) >> 1;
    a4 ^= (((a2 << 1) & a3) ^ ((a3 << 1) & a2)) & 0xAAAAAAAAAAAAAAAAu;
    a5 = (x & 0xCCCCCCCCCCCCCCCCu) >> 2;
    x ^= ((a4 << 2) ^ a4) & 0xCCCCCCCCCCCCCCCCu;
    a4 = a5 & 0x2222222222222222u;
    a4 |= a4 >> 1;
    a4 ^= (a5 << 1) & 0x2222222222222222u;
    x ^= a4;
    y = ((x & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((x & 0x0101010101010101u) << 7);
    x &= 0xB5B5B5B5B5B5B5B5u;
    x ^= y & 0x4040404040404040u;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0x8080808080808080u;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0x1616161616161616u;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0xEBEBEBEBEBEBEBEBu;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0x9797979797979797u;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0xFBFBFBFBFBFBFBFBu;
    y = ((y & 0xFEFEFEFEFEFEFEFEu) >> 1) | ((y & 0x0101010101010101u) << 7);
    x ^= y & 0x7D7D7D7D7D7D7D7Du;
    *w = x;
}

static void ShiftRows(u64 *state)
{
    unsigned char s[4];
    unsigned char *s0;
    int r;

    s0 = (unsigned char *)state;
    for (r = 0; r < 4; r++) {
        s[0] = s0[0*4 + r];
        s[1] = s0[1*4 + r];
        s[2] = s0[2*4 + r];
        s[3] = s0[3*4 + r];
        s0[0*4 + r] = s[(r+0) % 4];
        s0[1*4 + r] = s[(r+1) % 4];
        s0[2*4 + r] = s[(r+2) % 4];
        s0[3*4 + r] = s[(r+3) % 4];
    }
}

static void InvShiftRows(u64 *state)
{
    unsigned char s[4];
    unsigned char *s0;
    int r;

    s0 = (unsigned char *)state;
    for (r = 0; r < 4; r++) {
        s[0] = s0[0*4 + r];
        s[1] = s0[1*4 + r];
        s[2] = s0[2*4 + r];
        s[3] = s0[3*4 + r];
        s0[0*4 + r] = s[(4-r) % 4];
        s0[1*4 + r] = s[(5-r) % 4];
        s0[2*4 + r] = s[(6-r) % 4];
        s0[3*4 + r] = s[(7-r) % 4];
    }
}

static void MixColumns(u64 *state)
{
    uni s1;
    uni s;
    int c;

    for (c = 0; c < 2; c++) {
        s1.d = state[c];
        s.d = s1.d;
        s.d ^= ((s.d & 0xFFFF0000FFFF0000u) >> 16)
               | ((s.d & 0x0000FFFF0000FFFFu) << 16);
        s.d ^= ((s.d & 0xFF00FF00FF00FF00u) >> 8)
               | ((s.d & 0x00FF00FF00FF00FFu) << 8);
        s.d ^= s1.d;
        XtimeLong(&s1.d);
        s.d ^= s1.d;
        s.b[0] ^= s1.b[1];
        s.b[1] ^= s1.b[2];
        s.b[2] ^= s1.b[3];
        s.b[3] ^= s1.b[0];
        s.b[4] ^= s1.b[5];
        s.b[5] ^= s1.b[6];
        s.b[6] ^= s1.b[7];
        s.b[7] ^= s1.b[4];
        state[c] = s.d;
    }
}

static void InvMixColumns(u64 *state)
{
    uni s1;
    uni s;
    int c;

    for (c = 0; c < 2; c++) {
        s1.d = state[c];
        s.d = s1.d;
        s.d ^= ((s.d & 0xFFFF0000FFFF0000u) >> 16)
               | ((s.d & 0x0000FFFF0000FFFFu) << 16);
        s.d ^= ((s.d & 0xFF00FF00FF00FF00u) >> 8)
               | ((s.d & 0x00FF00FF00FF00FFu) << 8);
        s.d ^= s1.d;
        XtimeLong(&s1.d);
        s.d ^= s1.d;
        s.b[0] ^= s1.b[1];
        s.b[1] ^= s1.b[2];
        s.b[2] ^= s1.b[3];
        s.b[3] ^= s1.b[0];
        s.b[4] ^= s1.b[5];
        s.b[5] ^= s1.b[6];
        s.b[6] ^= s1.b[7];
        s.b[7] ^= s1.b[4];
        XtimeLong(&s1.d);
        s1.d ^= ((s1.d & 0xFFFF0000FFFF0000u) >> 16)
                | ((s1.d & 0x0000FFFF0000FFFFu) << 16);
        s.d ^= s1.d;
        XtimeLong(&s1.d);
        s1.d ^= ((s1.d & 0xFF00FF00FF00FF00u) >> 8)
                | ((s1.d & 0x00FF00FF00FF00FFu) << 8);
        s.d ^= s1.d;
        state[c] = s.d;
    }
}

static void AddRoundKey(u64 *state, const u64 *w)
{
    state[0] ^= w[0];
    state[1] ^= w[1];
}

static void Cipher(const unsigned char *in, unsigned char *out,
                   const u64 *w, int nr)
{
    u64 state[2];
    int i;

    memcpy(state, in, 16);

    AddRoundKey(state, w);

    for (i = 1; i < nr; i++) {
        SubLong(&state[0]);
        SubLong(&state[1]);
        ShiftRows(state);
        MixColumns(state);
        AddRoundKey(state, w + i*2);
    }

    SubLong(&state[0]);
    SubLong(&state[1]);
    ShiftRows(state);
    AddRoundKey(state, w + nr*2);

    memcpy(out, state, 16);
}

static void InvCipher(const unsigned char *in, unsigned char *out,
                      const u64 *w, int nr)

{
    u64 state[2];
    int i;

    memcpy(state, in, 16);

    AddRoundKey(state, w + nr*2);

    for (i = nr - 1; i > 0; i--) {
        InvShiftRows(state);
        InvSubLong(&state[0]);
        InvSubLong(&state[1]);
        AddRoundKey(state, w + i*2);
        InvMixColumns(state);
    }

    InvShiftRows(state);
    InvSubLong(&state[0]);
    InvSubLong(&state[1]);
    AddRoundKey(state, w);

    memcpy(out, state, 16);
}

static void RotWord(u32 *x)
{
    unsigned char *w0;
    unsigned char tmp;

    w0 = (unsigned char *)x;
    tmp = w0[0];
    w0[0] = w0[1];
    w0[1] = w0[2];
    w0[2] = w0[3];
    w0[3] = tmp;
}

static void KeyExpansion(const unsigned char *key, u64 *w,
                         int nr, int nk)
{
    u32 rcon;
    uni prev;
    u32 temp;
    int i, n;

    memcpy(w, key, nk*4);
    memcpy(&rcon, "\1\0\0\0", 4);
    n = nk/2;
    prev.d = w[n-1];
    for (i = n; i < (nr+1)*2; i++) {
        temp = prev.w[1];
        if (i % n == 0) {
            RotWord(&temp);
            SubWord(&temp);
            temp ^= rcon;
            XtimeWord(&rcon);
        } else if (nk > 6 && i % n == 2) {
            SubWord(&temp);
        }
        prev.d = w[i-n];
        prev.w[0] ^= temp;
        prev.w[1] ^= prev.w[0];
        w[i] = prev.d;
    }
}

/**
 * Expand the cipher key into the encryption key schedule.
 */
int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
                        AES_KEY *key)
{
    u64 *rk;

    if (!userKey || !key)
        return -1;
    if (bits != 128 && bits != 192 && bits != 256)
        return -2;

    rk = (u64*)key->rd_key;

    if (bits == 128)
        key->rounds = 10;
    else if (bits == 192)
        key->rounds = 12;
    else
        key->rounds = 14;

    KeyExpansion(userKey, rk, key->rounds, bits/32);
    return 0;
}

/**
 * Expand the cipher key into the decryption key schedule.
 */
int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
                        AES_KEY *key)
{
    return AES_set_encrypt_key(userKey, bits, key);
}

/*
 * Encrypt a single block
 * in and out can overlap
 */
void AES_encrypt(const unsigned char *in, unsigned char *out,
                 const AES_KEY *key)
{
    const u64 *rk;

    assert(in && out && key);
    rk = (u64*)key->rd_key;

    Cipher(in, out, rk, key->rounds);
}

/*
 * Decrypt a single block
 * in and out can overlap
 */
void AES_decrypt(const unsigned char *in, unsigned char *out,
                 const AES_KEY *key)
{
    const u64 *rk;

    assert(in && out && key);
    rk = (u64*)key->rd_key;

    InvCipher(in, out, rk, key->rounds);
}
#elif !defined(AES_ASM)
/*-
Te0[x] = S [x].[02, 01, 01, 03];
Te1[x] = S [x].[03, 02, 01, 01];
Te2[x] = S [x].[01, 03, 02, 01];
Te3[x] = S [x].[01, 01, 03, 02];

Td0[x] = Si[x].[0e, 09, 0d, 0b];
Td1[x] = Si[x].[0b, 0e, 09, 0d];
Td2[x] = Si[x].[0d, 0b, 0e, 09];
Td3[x] = Si[x].[09, 0d, 0b, 0e];
Td4[x] = Si[x].[01];
*/

static const u32 Te0[256] = {
    0xc66363a5U, 0xf87c7c84U, 0xee777799U, 0xf67b7b8dU,
    0xfff2f20dU, 0xd66b6bbdU, 0xde6f6fb1U, 0x91c5c554U,
    0x60303050U, 0x02010103U, 0xce6767a9U, 0x562b2b7dU,
    0xe7fefe19U, 0xb5d7d762U, 0x4dababe6U, 0xec76769aU,
    0x8fcaca45U, 0x1f82829dU, 0x89c9c940U, 0xfa7d7d87U,
    0xeffafa15U, 0xb25959ebU, 0x8e4747c9U, 0xfbf0f00bU,
    0x41adadecU, 0xb3d4d467U, 0x5fa2a2fdU, 0x45afafeaU,
    0x239c9cbfU, 0x53a4a4f7U, 0xe4727296U, 0x9bc0c05bU,
    0x75b7b7c2U, 0xe1fdfd1cU, 0x3d9393aeU, 0x4c26266aU,
    0x6c36365aU, 0x7e3f3f41U, 0xf5f7f702U, 0x83cccc4fU,
    0x6834345cU, 0x51a5a5f4U, 0xd1e5e534U, 0xf9f1f108U,
    0xe2717193U, 0xabd8d873U, 0x62313153U, 0x2a15153fU,
    0x0804040cU, 0x95c7c752U, 0x46232365U, 0x9dc3c35eU,
    0x30181828U, 0x379696a1U, 0x0a05050fU, 0x2f9a9ab5U,
    0x0e070709U, 0x24121236U, 0x1b80809bU, 0xdfe2e23dU,
    0xcdebeb26U, 0x4e272769U, 0x7fb2b2cdU, 0xea75759fU,
    0x1209091bU, 0x1d83839eU, 0x582c2c74U, 0x341a1a2eU,
    0x361b1b2dU, 0xdc6e6eb2U, 0xb45a5aeeU, 0x5ba0a0fbU,
    0xa45252f6U, 0x763b3b4dU, 0xb7d6d661U, 0x7db3b3ceU,
    0x5229297bU, 0xdde3e33eU, 0x5e2f2f71U, 0x13848497U,
    0xa65353f5U, 0xb9d1d168U, 0x00000000U, 0xc1eded2cU,
    0x40202060U, 0xe3fcfc1fU, 0x79b1b1c8U, 0xb65b5bedU,
    0xd46a6abeU, 0x8dcbcb46U, 0x67bebed9U, 0x7239394bU,
    0x944a4adeU, 0x984c4cd4U, 0xb05858e8U, 0x85cfcf4aU,
    0xbbd0d06bU, 0xc5efef2aU, 0x4faaaae5U, 0xedfbfb16U,
    0x864343c5U, 0x9a4d4dd7U, 0x66333355U, 0x11858594U,
    0x8a4545cfU, 0xe9f9f910U, 0x04020206U, 0xfe7f7f81U,
    0xa05050f0U, 0x783c3c44U, 0x259f9fbaU, 0x4ba8a8e3U,
    0xa25151f3U, 0x5da3a3feU, 0x804040c0U, 0x058f8f8aU,
    0x3f9292adU, 0x219d9dbcU, 0x70383848U, 0xf1f5f504U,
    0x63bcbcdfU, 0x77b6b6c1U, 0xafdada75U, 0x42212163U,
    0x20101030U, 0xe5ffff1aU, 0xfdf3f30eU, 0xbfd2d26dU,
    0x81cdcd4cU, 0x180c0c14U, 0x26131335U, 0xc3ecec2fU,
    0xbe5f5fe1U, 0x359797a2U, 0x884444ccU, 0x2e171739U,
    0x93c4c457U, 0x55a7a7f2U, 0xfc7e7e82U, 0x7a3d3d47U,
    0xc86464acU, 0xba5d5de7U, 0x3219192bU, 0xe6737395U,
    0xc06060a0U, 0x19818198U, 0x9e4f4fd1U, 0xa3dcdc7fU,
    0x44222266U, 0x542a2a7eU, 0x3b9090abU, 0x0b888883U,
    0x8c4646caU, 0xc7eeee29U, 0x6bb8b8d3U, 0x2814143cU,
    0xa7dede79U, 0xbc5e5ee2U, 0x160b0b1dU, 0xaddbdb76U,
    0xdbe0e03bU, 0x64323256U, 0x743a3a4eU, 0x140a0a1eU,
    0x924949dbU, 0x0c06060aU, 0x4824246cU, 0xb85c5ce4U,
    0x9fc2c25dU, 0xbdd3d36eU, 0x43acacefU, 0xc46262a6U,
    0x399191a8U, 0x319595a4U, 0xd3e4e437U, 0xf279798bU,
    0xd5e7e732U, 0x8bc8c843U, 0x6e373759U, 0xda6d6db7U,
    0x018d8d8cU, 0xb1d5d564U, 0x9c4e4ed2U, 0x49a9a9e0U,
    0xd86c6cb4U, 0xac5656faU, 0xf3f4f407U, 0xcfeaea25U,
    0xca6565afU, 0xf47a7a8eU, 0x47aeaee9U, 0x10080818U,
    0x6fbabad5U, 0xf0787888U, 0x4a25256fU, 0x5c2e2e72U,
    0x381c1c24U, 0x57a6a6f1U, 0x73b4b4c7U, 0x97c6c651U,
    0xcbe8e823U, 0xa1dddd7cU, 0xe874749cU, 0x3e1f1f21U,
    0x964b4bddU, 0x61bdbddcU, 0x0d8b8b86U, 0x0f8a8a85U,
    0xe0707090U, 0x7c3e3e42U, 0x71b5b5c4U, 0xcc6666aaU,
    0x904848d8U, 0x06030305U, 0xf7f6f601U, 0x1c0e0e12U,
    0xc26161a3U, 0x6a35355fU, 0xae5757f9U, 0x69b9b9d0U,
    0x17868691U, 0x99c1c158U, 0x3a1d1d27U, 0x279e9eb9U,
    0xd9e1e138U, 0xebf8f813U, 0x2b9898b3U, 0x22111133U,
    0xd26969bbU, 0xa9d9d970U, 0x078e8e89U, 0x339494a7U,
    0x2d9b9bb6U, 0x3c1e1e22U, 0x15878792U, 0xc9e9e920U,
    0x87cece49U, 0xaa5555ffU, 0x50282878U, 0xa5dfdf7aU,
    0x038c8c8fU, 0x59a1a1f8U, 0x09898980U, 0x1a0d0d17U,
    0x65bfbfdaU, 0xd7e6e631U, 0x844242c6U, 0xd06868b8U,
    0x824141c3U, 0x299999b0U, 0x5a2d2d77U, 0x1e0f0f11U,
    0x7bb0b0cbU, 0xa85454fcU, 0x6dbbbbd6U, 0x2c16163aU,
};
static const u32 Te1[256] = {
    0xa5c66363U, 0x84f87c7cU, 0x99ee7777U, 0x8df67b7bU,
    0x0dfff2f2U, 0xbdd66b6bU, 0xb1de6f6fU, 0x5491c5c5U,
    0x50603030U, 0x03020101U, 0xa9ce6767U, 0x7d562b2bU,
    0x19e7fefeU, 0x62b5d7d7U, 0xe64dababU, 0x9aec7676U,
    0x458fcacaU, 0x9d1f8282U, 0x4089c9c9U, 0x87fa7d7dU,
    0x15effafaU, 0xebb25959U, 0xc98e4747U, 0x0bfbf0f0U,
    0xec41adadU, 0x67b3d4d4U, 0xfd5fa2a2U, 0xea45afafU,
    0xbf239c9cU, 0xf753a4a4U, 0x96e47272U, 0x5b9bc0c0U,
    0xc275b7b7U, 0x1ce1fdfdU, 0xae3d9393U, 0x6a4c2626U,
    0x5a6c3636U, 0x417e3f3fU, 0x02f5f7f7U, 0x4f83ccccU,
    0x5c683434U, 0xf451a5a5U, 0x34d1e5e5U, 0x08f9f1f1U,
    0x93e27171U, 0x73abd8d8U, 0x53623131U, 0x3f2a1515U,
    0x0c080404U, 0x5295c7c7U, 0x65462323U, 0x5e9dc3c3U,
    0x28301818U, 0xa1379696U, 0x0f0a0505U, 0xb52f9a9aU,
    0x090e0707U, 0x36241212U, 0x9b1b8080U, 0x3ddfe2e2U,
    0x26cdebebU, 0x694e2727U, 0xcd7fb2b2U, 0x9fea7575U,
    0x1b120909U, 0x9e1d8383U, 0x74582c2cU, 0x2e341a1aU,
    0x2d361b1bU, 0xb2dc6e6eU, 0xeeb45a5aU, 0xfb5ba0a0U,
    0xf6a45252U, 0x4d763b3bU, 0x61b7d6d6U, 0xce7db3b3U,
    0x7b522929U, 0x3edde3e3U, 0x715e2f2fU, 0x97138484U,
    0xf5a65353U, 0x68b9d1d1U, 0x00000000U, 0x2cc1ededU,
    0x60402020U, 0x1fe3fcfcU, 0xc879b1b1U, 0xedb65b5bU,
    0xbed46a6aU, 0x468dcbcbU, 0xd967bebeU, 0x4b723939U,
    0xde944a4aU, 0xd4984c4cU, 0xe8b05858U, 0x4a85cfcfU,
    0x6bbbd0d0U, 0x2ac5efefU, 0xe54faaaaU, 0x16edfbfbU,
    0xc5864343U, 0xd79a4d4dU, 0x55663333U, 0x94118585U,
    0xcf8a4545U, 0x10e9f9f9U, 0x06040202U, 0x81fe7f7fU,
    0xf0a05050U, 0x44783c3cU, 0xba259f9fU, 0xe34ba8a8U,
    0xf3a25151U, 0xfe5da3a3U, 0xc0804040U, 0x8a058f8fU,
    0xad3f9292U, 0xbc219d9dU, 0x48703838U, 0x04f1f5f5U,
    0xdf63bcbcU, 0xc177b6b6U, 0x75afdadaU, 0x63422121U,
    0x30201010U, 0x1ae5ffffU, 0x0efdf3f3U, 0x6dbfd2d2U,
    0x4c81cdcdU, 0x14180c0cU, 0x35261313U, 0x2fc3ececU,
    0xe1be5f5fU, 0xa2359797U, 0xcc884444U, 0x392e1717U,
    0x5793c4c4U, 0xf255a7a7U, 0x82fc7e7eU, 0x477a3d3dU,
    0xacc86464U, 0xe7ba5d5dU, 0x2b321919U, 0x95e67373U,
    0xa0c06060U, 0x98198181U, 0xd19e4f4fU, 0x7fa3dcdcU,
    0x66442222U, 0x7e542a2aU, 0xab3b9090U, 0x830b8888U,
    0xca8c4646U, 0x29c7eeeeU, 0xd36bb8b8U, 0x3c281414U,
    0x79a7dedeU, 0xe2bc5e5eU, 0x1d160b0bU, 0x76addbdbU,
    0x3bdbe0e0U, 0x56643232U, 0x4e743a3aU, 0x1e140a0aU,
    0xdb924949U, 0x0a0c0606U, 0x6c482424U, 0xe4b85c5cU,
    0x5d9fc2c2U, 0x6ebdd3d3U, 0xef43acacU, 0xa6c46262U,
    0xa8399191U, 0xa4319595U, 0x37d3e4e4U, 0x8bf27979U,
    0x32d5e7e7U, 0x438bc8c8U, 0x596e3737U, 0xb7da6d6dU,
    0x8c018d8dU, 0x64b1d5d5U, 0xd29c4e4eU, 0xe049a9a9U,
    0xb4d86c6cU, 0xfaac5656U, 0x07f3f4f4U, 0x25cfeaeaU,
    0xafca6565U, 0x8ef47a7aU, 0xe947aeaeU, 0x18100808U,
    0xd56fbabaU, 0x88f07878U, 0x6f4a2525U, 0x725c2e2eU,
    0x24381c1cU, 0xf157a6a6U, 0xc773b4b4U, 0x5197c6c6U,
    0x23cbe8e8U, 0x7ca1ddddU, 0x9ce87474U, 0x213e1f1fU,
    0xdd964b4bU, 0xdc61bdbdU, 0x860d8b8bU, 0x850f8a8aU,
    0x90e07070U, 0x427c3e3eU, 0xc471b5b5U, 0xaacc6666U,
    0xd8904848U, 0x05060303U, 0x01f7f6f6U, 0x121c0e0eU,
    0xa3c26161U, 0x5f6a3535U, 0xf9ae5757U, 0xd069b9b9U,
    0x91178686U, 0x5899c1c1U, 0x273a1d1dU, 0xb9279e9eU,
    0x38d9e1e1U, 0x13ebf8f8U, 0xb32b9898U, 0x33221111U,
    0xbbd26969U, 0x70a9d9d9U, 0x89078e8eU, 0xa7339494U,
    0xb62d9b9bU, 0x223c1e1eU, 0x92158787U, 0x20c9e9e9U,
    0x4987ceceU, 0xffaa5555U, 0x78502828U, 0x7aa5dfdfU,
    0x8f038c8cU, 0xf859a1a1U, 0x80098989U, 0x171a0d0dU,
    0xda65bfbfU, 0x31d7e6e6U, 0xc6844242U, 0xb8d06868U,
    0xc3824141U, 0xb0299999U, 0x775a2d2dU, 0x111e0f0fU,
    0xcb7bb0b0U, 0xfca85454U, 0xd66dbbbbU, 0x3a2c1616U,
};
static const u32 Te2[256] = {
    0x63a5c663U, 0x7c84f87cU, 0x7799ee77U, 0x7b8df67bU,
    0xf20dfff2U, 0x6bbdd66bU, 0x6fb1de6fU, 0xc55491c5U,
    0x30506030U, 0x01030201U, 0x67a9ce67U, 0x2b7d562bU,
    0xfe19e7feU, 0xd762b5d7U, 0xabe64dabU, 0x769aec76U,
    0xca458fcaU, 0x829d1f82U, 0xc94089c9U, 0x7d87fa7dU,
    0xfa15effaU, 0x59ebb259U, 0x47c98e47U, 0xf00bfbf0U,
    0xadec41adU, 0xd467b3d4U, 0xa2fd5fa2U, 0xafea45afU,
    0x9cbf239cU, 0xa4f753a4U, 0x7296e472U, 0xc05b9bc0U,
    0xb7c275b7U, 0xfd1ce1fdU, 0x93ae3d93U, 0x266a4c26U,
    0x365a6c36U, 0x3f417e3fU, 0xf702f5f7U, 0xcc4f83ccU,
    0x345c6834U, 0xa5f451a5U, 0xe534d1e5U, 0xf108f9f1U,
    0x7193e271U, 0xd873abd8U, 0x31536231U, 0x153f2a15U,
    0x040c0804U, 0xc75295c7U, 0x23654623U, 0xc35e9dc3U,
    0x18283018U, 0x96a13796U, 0x050f0a05U, 0x9ab52f9aU,
    0x07090e07U, 0x12362412U, 0x809b1b80U, 0xe23ddfe2U,
    0xeb26cdebU, 0x27694e27U, 0xb2cd7fb2U, 0x759fea75U,
    0x091b1209U, 0x839e1d83U, 0x2c74582cU, 0x1a2e341aU,
    0x1b2d361bU, 0x6eb2dc6eU, 0x5aeeb45aU, 0xa0fb5ba0U,
    0x52f6a452U, 0x3b4d763bU, 0xd661b7d6U, 0xb3ce7db3U,
    0x297b5229U, 0xe33edde3U, 0x2f715e2fU, 0x84971384U,
    0x53f5a653U, 0xd168b9d1U, 0x00000000U, 0xed2cc1edU,
    0x20604020U, 0xfc1fe3fcU, 0xb1c879b1U, 0x5bedb65bU,
    0x6abed46aU, 0xcb468dcbU, 0xbed967beU, 0x394b7239U,
    0x4ade944aU, 0x4cd4984cU, 0x58e8b058U, 0xcf4a85cfU,
    0xd06bbbd0U, 0xef2ac5efU, 0xaae54faaU, 0xfb16edfbU,
    0x43c58643U, 0x4dd79a4dU, 0x33556633U, 0x85941185U,
    0x45cf8a45U, 0xf910e9f9U, 0x02060402U, 0x7f81fe7fU,
    0x50f0a050U, 0x3c44783cU, 0x9fba259fU, 0xa8e34ba8U,
    0x51f3a251U, 0xa3fe5da3U, 0x40c08040U, 0x8f8a058fU,
    0x92ad3f92U, 0x9dbc219dU, 0x38487038U, 0xf504f1f5U,
    0xbcdf63bcU, 0xb6c177b6U, 0xda75afdaU, 0x21634221U,
    0x10302010U, 0xff1ae5ffU, 0xf30efdf3U, 0xd26dbfd2U,
    0xcd4c81cdU, 0x0c14180cU, 0x13352613U, 0xec2fc3ecU,
    0x5fe1be5fU, 0x97a23597U, 0x44cc8844U, 0x17392e17U,
    0xc45793c4U, 0xa7f255a7U, 0x7e82fc7eU, 0x3d477a3dU,
    0x64acc864U, 0x5de7ba5dU, 0x192b3219U, 0x7395e673U,
    0x60a0c060U, 0x81981981U, 0x4fd19e4fU, 0xdc7fa3dcU,
    0x22664422U, 0x2a7e542aU, 0x90ab3b90U, 0x88830b88U,
    0x46ca8c46U, 0xee29c7eeU, 0xb8d36bb8U, 0x143c2814U,
    0xde79a7deU, 0x5ee2bc5eU, 0x0b1d160bU, 0xdb76addbU,
    0xe03bdbe0U, 0x32566432U, 0x3a4e743aU, 0x0a1e140aU,
    0x49db9249U, 0x060a0c06U, 0x246c4824U, 0x5ce4b85cU,
    0xc25d9fc2U, 0xd36ebdd3U, 0xacef43acU, 0x62a6c462U,
    0x91a83991U, 0x95a43195U, 0xe437d3e4U, 0x798bf279U,
    0xe732d5e7U, 0xc8438bc8U, 0x37596e37U, 0x6db7da6dU,
    0x8d8c018dU, 0xd564b1d5U, 0x4ed29c4eU, 0xa9e049a9U,
    0x6cb4d86cU, 0x56faac56U, 0xf407f3f4U, 0xea25cfeaU,
    0x65afca65U, 0x7a8ef47aU, 0xaee947aeU, 0x08181008U,
    0xbad56fbaU, 0x7888f078U, 0x256f4a25U, 0x2e725c2eU,
    0x1c24381cU, 0xa6f157a6U, 0xb4c773b4U, 0xc65197c6U,
    0xe823cbe8U, 0xdd7ca1ddU, 0x749ce874U, 0x1f213e1fU,
    0x4bdd964bU, 0xbddc61bdU, 0x8b860d8bU, 0x8a850f8aU,
    0x7090e070U, 0x3e427c3eU, 0xb5c471b5U, 0x66aacc66U,
    0x48d89048U, 0x03050603U, 0xf601f7f6U, 0x0e121c0eU,
    0x61a3c261U, 0x355f6a35U, 0x57f9ae57U, 0xb9d069b9U,
    0x86911786U, 0xc15899c1U, 0x1d273a1dU, 0x9eb9279eU,
    0xe138d9e1U, 0xf813ebf8U, 0x98b32b98U, 0x11332211U,
    0x69bbd269U, 0xd970a9d9U, 0x8e89078eU, 0x94a73394U,
    0x9bb62d9bU, 0x1e223c1eU, 0x87921587U, 0xe920c9e9U,
    0xce4987ceU, 0x55ffaa55U, 0x28785028U, 0xdf7aa5dfU,
    0x8c8f038cU, 0xa1f859a1U, 0x89800989U, 0x0d171a0dU,
    0xbfda65bfU, 0xe631d7e6U, 0x42c68442U, 0x68b8d068U,
    0x41c38241U, 0x99b02999U, 0x2d775a2dU, 0x0f111e0fU,
    0xb0cb7bb0U, 0x54fca854U, 0xbbd66dbbU, 0x163a2c16U,
};
static const u32 Te3[256] = {
    0x6363a5c6U, 0x7c7c84f8U, 0x777799eeU, 0x7b7b8df6U,
    0xf2f20dffU, 0x6b6bbdd6U, 0x6f6fb1deU, 0xc5c55491U,
    0x30305060U, 0x01010302U, 0x6767a9ceU, 0x2b2b7d56U,
    0xfefe19e7U, 0xd7d762b5U, 0xababe64dU, 0x76769aecU,
    0xcaca458fU, 0x82829d1fU, 0xc9c94089U, 0x7d7d87faU,
    0xfafa15efU, 0x5959ebb2U, 0x4747c98eU, 0xf0f00bfbU,
    0xadadec41U, 0xd4d467b3U, 0xa2a2fd5fU, 0xafafea45U,
    0x9c9cbf23U, 0xa4a4f753U, 0x727296e4U, 0xc0c05b9bU,
    0xb7b7c275U, 0xfdfd1ce1U, 0x9393ae3dU, 0x26266a4cU,
    0x36365a6cU, 0x3f3f417eU, 0xf7f702f5U, 0xcccc4f83U,
    0x34345c68U, 0xa5a5f451U, 0xe5e534d1U, 0xf1f108f9U,
    0x717193e2U, 0xd8d873abU, 0x31315362U, 0x15153f2aU,
    0x04040c08U, 0xc7c75295U, 0x23236546U, 0xc3c35e9dU,
    0x18182830U, 0x9696a137U, 0x05050f0aU, 0x9a9ab52fU,
    0x0707090eU, 0x12123624U, 0x80809b1bU, 0xe2e23ddfU,
    0xebeb26cdU, 0x2727694eU, 0xb2b2cd7fU, 0x75759feaU,
    0x09091b12U, 0x83839e1dU, 0x2c2c7458U, 0x1a1a2e34U,
    0x1b1b2d36U, 0x6e6eb2dcU, 0x5a5aeeb4U, 0xa0a0fb5bU,
    0x5252f6a4U, 0x3b3b4d76U, 0xd6d661b7U, 0xb3b3ce7dU,
    0x29297b52U, 0xe3e33eddU, 0x2f2f715eU, 0x84849713U,
    0x5353f5a6U, 0xd1d168b9U, 0x00000000U, 0xeded2cc1U,
    0x20206040U, 0xfcfc1fe3U, 0xb1b1c879U, 0x5b5bedb6U,
    0x6a6abed4U, 0xcbcb468dU, 0xbebed967U, 0x39394b72U,
    0x4a4ade94U, 0x4c4cd498U, 0x5858e8b0U, 0xcfcf4a85U,
    0xd0d06bbbU, 0xefef2ac5U, 0xaaaae54fU, 0xfbfb16edU,
    0x4343c586U, 0x4d4dd79aU, 0x33335566U, 0x85859411U,
    0x4545cf8aU, 0xf9f910e9U, 0x02020604U, 0x7f7f81feU,
    0x5050f0a0U, 0x3c3c4478U, 0x9f9fba25U, 0xa8a8e34bU,
    0x5151f3a2U, 0xa3a3fe5dU, 0x4040c080U, 0x8f8f8a05U,
    0x9292ad3fU, 0x9d9dbc21U, 0x38384870U, 0xf5f504f1U,
    0xbcbcdf63U, 0xb6b6c177U, 0xdada75afU, 0x21216342U,
    0x10103020U, 0xffff1ae5U, 0xf3f30efdU, 0xd2d26dbfU,
    0xcdcd4c81U, 0x0c0c1418U, 0x13133526U, 0xecec2fc3U,
    0x5f5fe1beU, 0x9797a235U, 0x4444cc88U, 0x1717392eU,
    0xc4c45793U, 0xa7a7f255U, 0x7e7e82fcU, 0x3d3d477aU,
    0x6464acc8U, 0x5d5de7baU, 0x19192b32U, 0x737395e6U,
    0x6060a0c0U, 0x81819819U, 0x4f4fd19eU, 0xdcdc7fa3U,
    0x22226644U, 0x2a2a7e54U, 0x9090ab3bU, 0x8888830bU,
    0x4646ca8cU, 0xeeee29c7U, 0xb8b8d36bU, 0x14143c28U,
    0xdede79a7U, 0x5e5ee2bcU, 0x0b0b1d16U, 0xdbdb76adU,
    0xe0e03bdbU, 0x32325664U, 0x3a3a4e74U, 0x0a0a1e14U,
    0x4949db92U, 0x06060a0cU, 0x24246c48U, 0x5c5ce4b8U,
    0xc2c25d9fU, 0xd3d36ebdU, 0xacacef43U, 0x6262a6c4U,
    0x9191a839U, 0x9595a431U, 0xe4e437d3U, 0x79798bf2U,
    0xe7e732d5U, 0xc8c8438bU, 0x3737596eU, 0x6d6db7daU,
    0x8d8d8c01U, 0xd5d564b1U, 0x4e4ed29cU, 0xa9a9e049U,
    0x6c6cb4d8U, 0x5656faacU, 0xf4f407f3U, 0xeaea25cfU,
    0x6565afcaU, 0x7a7a8ef4U, 0xaeaee947U, 0x08081810U,
    0xbabad56fU, 0x787888f0U, 0x25256f4aU, 0x2e2e725cU,
    0x1c1c2438U, 0xa6a6f157U, 0xb4b4c773U, 0xc6c65197U,
    0xe8e823cbU, 0xdddd7ca1U, 0x74749ce8U, 0x1f1f213eU,
    0x4b4bdd96U, 0xbdbddc61U, 0x8b8b860dU, 0x8a8a850fU,
    0x707090e0U, 0x3e3e427cU, 0xb5b5c471U, 0x6666aaccU,
    0x4848d890U, 0x03030506U, 0xf6f601f7U, 0x0e0e121cU,
    0x6161a3c2U, 0x35355f6aU, 0x5757f9aeU, 0xb9b9d069U,
    0x86869117U, 0xc1c15899U, 0x1d1d273aU, 0x9e9eb927U,
    0xe1e138d9U, 0xf8f813ebU, 0x9898b32bU, 0x11113322U,
    0x6969bbd2U, 0xd9d970a9U, 0x8e8e8907U, 0x9494a733U,
    0x9b9bb62dU, 0x1e1e223cU, 0x87879215U, 0xe9e920c9U,
    0xcece4987U, 0x5555ffaaU, 0x28287850U, 0xdfdf7aa5U,
    0x8c8c8f03U, 0xa1a1f859U, 0x89898009U, 0x0d0d171aU,
    0xbfbfda65U, 0xe6e631d7U, 0x4242c684U, 0x6868b8d0U,
    0x4141c382U, 0x9999b029U, 0x2d2d775aU, 0x0f0f111eU,
    0xb0b0cb7bU, 0x5454fca8U, 0xbbbbd66dU, 0x16163a2cU,
};

static const u32 Td0[256] = {
    0x51f4a750U, 0x7e416553U, 0x1a17a4c3U, 0x3a275e96U,
    0x3bab6bcbU, 0x1f9d45f1U, 0xacfa58abU, 0x4be30393U,
    0x2030fa55U, 0xad766df6U, 0x88cc7691U, 0xf5024c25U,
    0x4fe5d7fcU, 0xc52acbd7U, 0x26354480U, 0xb562a38fU,
    0xdeb15a49U, 0x25ba1b67U, 0x45ea0e98U, 0x5dfec0e1U,
    0xc32f7502U, 0x814cf012U, 0x8d4697a3U, 0x6bd3f9c6U,
    0x038f5fe7U, 0x15929c95U, 0xbf6d7aebU, 0x955259daU,
    0xd4be832dU, 0x587421d3U, 0x49e06929U, 0x8ec9c844U,
    0x75c2896aU, 0xf48e7978U, 0x99583e6bU, 0x27b971ddU,
    0xbee14fb6U, 0xf088ad17U, 0xc920ac66U, 0x7dce3ab4U,
    0x63df4a18U, 0xe51a3182U, 0x97513360U, 0x62537f45U,
    0xb16477e0U, 0xbb6bae84U, 0xfe81a01cU, 0xf9082b94U,
    0x70486858U, 0x8f45fd19U, 0x94de6c87U, 0x527bf8b7U,
    0xab73d323U, 0x724b02e2U, 0xe31f8f57U, 0x6655ab2aU,
    0xb2eb2807U, 0x2fb5c203U, 0x86c57b9aU, 0xd33708a5U,
    0x302887f2U, 0x23bfa5b2U, 0x02036abaU, 0xed16825cU,
    0x8acf1c2bU, 0xa779b492U, 0xf307f2f0U, 0x4e69e2a1U,
    0x65daf4cdU, 0x0605bed5U, 0xd134621fU, 0xc4a6fe8aU,
    0x342e539dU, 0xa2f355a0U, 0x058ae132U, 0xa4f6eb75U,
    0x0b83ec39U, 0x4060efaaU, 0x5e719f06U, 0xbd6e1051U,
    0x3e218af9U, 0x96dd063dU, 0xdd3e05aeU, 0x4de6bd46U,
    0x91548db5U, 0x71c45d05U, 0x0406d46fU, 0x605015ffU,
    0x1998fb24U, 0xd6bde997U, 0x894043ccU, 0x67d99e77U,
    0xb0e842bdU, 0x07898b88U, 0xe7195b38U, 0x79c8eedbU,
    0xa17c0a47U, 0x7c420fe9U, 0xf8841ec9U, 0x00000000U,
    0x09808683U, 0x322bed48U, 0x1e1170acU, 0x6c5a724eU,
    0xfd0efffbU, 0x0f853856U, 0x3daed51eU, 0x362d3927U,
    0x0a0fd964U, 0x685ca621U, 0x9b5b54d1U, 0x24362e3aU,
    0x0c0a67b1U, 0x9357e70fU, 0xb4ee96d2U, 0x1b9b919eU,
    0x80c0c54fU, 0x61dc20a2U, 0x5a774b69U, 0x1c121a16U,
    0xe293ba0aU, 0xc0a02ae5U, 0x3c22e043U, 0x121b171dU,
    0x0e090d0bU, 0xf28bc7adU, 0x2db6a8b9U, 0x141ea9c8U,
    0x57f11985U, 0xaf75074cU, 0xee99ddbbU, 0xa37f60fdU,
    0xf701269fU, 0x5c72f5bcU, 0x44663bc5U, 0x5bfb7e34U,
    0x8b432976U, 0xcb23c6dcU, 0xb6edfc68U, 0xb8e4f163U,
    0xd731dccaU, 0x42638510U, 0x13972240U, 0x84c61120U,
    0x854a247dU, 0xd2bb3df8U, 0xaef93211U, 0xc729a16dU,
    0x1d9e2f4bU, 0xdcb230f3U, 0x0d8652ecU, 0x77c1e3d0U,
    0x2bb3166cU, 0xa970b999U, 0x119448faU, 0x47e96422U,
    0xa8fc8cc4U, 0xa0f03f1aU, 0x567d2cd8U, 0x223390efU,
    0x87494ec7U, 0xd938d1c1U, 0x8ccaa2feU, 0x98d40b36U,
    0xa6f581cfU, 0xa57ade28U, 0xdab78e26U, 0x3fadbfa4U,
    0x2c3a9de4U, 0x5078920dU, 0x6a5fcc9bU, 0x547e4662U,
    0xf68d13c2U, 0x90d8b8e8U, 0x2e39f75eU, 0x82c3aff5U,
    0x9f5d80beU, 0x69d0937cU, 0x6fd52da9U, 0xcf2512b3U,
    0xc8ac993bU, 0x10187da7U, 0xe89c636eU, 0xdb3bbb7bU,
    0xcd267809U, 0x6e5918f4U, 0xec9ab701U, 0x834f9aa8U,
    0xe6956e65U, 0xaaffe67eU, 0x21bccf08U, 0xef15e8e6U,
    0xbae79bd9U, 0x4a6f36ceU, 0xea9f09d4U, 0x29b07cd6U,
    0x31a4b2afU, 0x2a3f2331U, 0xc6a59430U, 0x35a266c0U,
    0x744ebc37U, 0xfc82caa6U, 0xe090d0b0U, 0x33a7d815U,
    0xf104984aU, 0x41ecdaf7U, 0x7fcd500eU, 0x1791f62fU,
    0x764dd68dU, 0x43efb04dU, 0xccaa4d54U, 0xe49604dfU,
    0x9ed1b5e3U, 0x4c6a881bU, 0xc12c1fb8U, 0x4665517fU,
    0x9d5eea04U, 0x018c355dU, 0xfa877473U, 0xfb0b412eU,
    0xb3671d5aU, 0x92dbd252U, 0xe9105633U, 0x6dd64713U,
    0x9ad7618cU, 0x37a10c7aU, 0x59f8148eU, 0xeb133c89U,
    0xcea927eeU, 0xb761c935U, 0xe11ce5edU, 0x7a47b13cU,
    0x9cd2df59U, 0x55f2733fU, 0x1814ce79U, 0x73c737bfU,
    0x53f7cdeaU, 0x5ffdaa5bU, 0xdf3d6f14U, 0x7844db86U,
    0xcaaff381U, 0xb968c43eU, 0x3824342cU, 0xc2a3405fU,
    0x161dc372U, 0xbce2250cU, 0x283c498bU, 0xff0d9541U,
    0x39a80171U, 0x080cb3deU, 0xd8b4e49cU, 0x6456c190U,
    0x7bcb8461U, 0xd532b670U, 0x486c5c74U, 0xd0b85742U,
};
static const u32 Td1[256] = {
    0x5051f4a7U, 0x537e4165U, 0xc31a17a4U, 0x963a275eU,
    0xcb3bab6bU, 0xf11f9d45U, 0xabacfa58U, 0x934be303U,
    0x552030faU, 0xf6ad766dU, 0x9188cc76U, 0x25f5024cU,
    0xfc4fe5d7U, 0xd7c52acbU, 0x80263544U, 0x8fb562a3U,
    0x49deb15aU, 0x6725ba1bU, 0x9845ea0eU, 0xe15dfec0U,
    0x02c32f75U, 0x12814cf0U, 0xa38d4697U, 0xc66bd3f9U,
    0xe7038f5fU, 0x9515929cU, 0xebbf6d7aU, 0xda955259U,
    0x2dd4be83U, 0xd3587421U, 0x2949e069U, 0x448ec9c8U,
    0x6a75c289U, 0x78f48e79U, 0x6b99583eU, 0xdd27b971U,
    0xb6bee14fU, 0x17f088adU, 0x66c920acU, 0xb47dce3aU,
    0x1863df4aU, 0x82e51a31U, 0x60975133U, 0x4562537fU,
    0xe0b16477U, 0x84bb6baeU, 0x1cfe81a0U, 0x94f9082bU,
    0x58704868U, 0x198f45fdU, 0x8794de6cU, 0xb7527bf8U,
    0x23ab73d3U, 0xe2724b02U, 0x57e31f8fU, 0x2a6655abU,
    0x07b2eb28U, 0x032fb5c2U, 0x9a86c57bU, 0xa5d33708U,
    0xf2302887U, 0xb223bfa5U, 0xba02036aU, 0x5ced1682U,
    0x2b8acf1cU, 0x92a779b4U, 0xf0f307f2U, 0xa14e69e2U,
    0xcd65daf4U, 0xd50605beU, 0x1fd13462U, 0x8ac4a6feU,
    0x9d342e53U, 0xa0a2f355U, 0x32058ae1U, 0x75a4f6ebU,
    0x390b83ecU, 0xaa4060efU, 0x065e719fU, 0x51bd6e10U,
    0xf93e218aU, 0x3d96dd06U, 0xaedd3e05U, 0x464de6bdU,
    0xb591548dU, 0x0571c45dU, 0x6f0406d4U, 0xff605015U,
    0x241998fbU, 0x97d6bde9U, 0xcc894043U, 0x7767d99eU,
    0xbdb0e842U, 0x8807898bU, 0x38e7195bU, 0xdb79c8eeU,
    0x47a17c0aU, 0xe97c420fU, 0xc9f8841eU, 0x00000000U,
    0x83098086U, 0x48322bedU, 0xac1e1170U, 0x4e6c5a72U,
    0xfbfd0effU, 0x560f8538U, 0x1e3daed5U, 0x27362d39U,
    0x640a0fd9U, 0x21685ca6U, 0xd19b5b54U, 0x3a24362eU,
    0xb10c0a67U, 0x0f9357e7U, 0xd2b4ee96U, 0x9e1b9b91U,
    0x4f80c0c5U, 0xa261dc20U, 0x695a774bU, 0x161c121aU,
    0x0ae293baU, 0xe5c0a02aU, 0x433c22e0U, 0x1d121b17U,
    0x0b0e090dU, 0xadf28bc7U, 0xb92db6a8U, 0xc8141ea9U,
    0x8557f119U, 0x4caf7507U, 0xbbee99ddU, 0xfda37f60U,
    0x9ff70126U, 0xbc5c72f5U, 0xc544663bU, 0x345bfb7eU,
    0x768b4329U, 0xdccb23c6U, 0x68b6edfcU, 0x63b8e4f1U,
    0xcad731dcU, 0x10426385U, 0x40139722U, 0x2084c611U,
    0x7d854a24U, 0xf8d2bb3dU, 0x11aef932U, 0x6dc729a1U,
    0x4b1d9e2fU, 0xf3dcb230U, 0xec0d8652U, 0xd077c1e3U,
    0x6c2bb316U, 0x99a970b9U, 0xfa119448U, 0x2247e964U,
    0xc4a8fc8cU, 0x1aa0f03fU, 0xd8567d2cU, 0xef223390U,
    0xc787494eU, 0xc1d938d1U, 0xfe8ccaa2U, 0x3698d40bU,
    0xcfa6f581U, 0x28a57adeU, 0x26dab78eU, 0xa43fadbfU,
    0xe42c3a9dU, 0x0d507892U, 0x9b6a5fccU, 0x62547e46U,
    0xc2f68d13U, 0xe890d8b8U, 0x5e2e39f7U, 0xf582c3afU,
    0xbe9f5d80U, 0x7c69d093U, 0xa96fd52dU, 0xb3cf2512U,
    0x3bc8ac99U, 0xa710187dU, 0x6ee89c63U, 0x7bdb3bbbU,
    0x09cd2678U, 0xf46e5918U, 0x01ec9ab7U, 0xa8834f9aU,
    0x65e6956eU, 0x7eaaffe6U, 0x0821bccfU, 0xe6ef15e8U,
    0xd9bae79bU, 0xce4a6f36U, 0xd4ea9f09U, 0xd629b07cU,
    0xaf31a4b2U, 0x312a3f23U, 0x30c6a594U, 0xc035a266U,
    0x37744ebcU, 0xa6fc82caU, 0xb0e090d0U, 0x1533a7d8U,
    0x4af10498U, 0xf741ecdaU, 0x0e7fcd50U, 0x2f1791f6U,
    0x8d764dd6U, 0x4d43efb0U, 0x54ccaa4dU, 0xdfe49604U,
    0xe39ed1b5U, 0x1b4c6a88U, 0xb8c12c1fU, 0x7f466551U,
    0x049d5eeaU, 0x5d018c35U, 0x73fa8774U, 0x2efb0b41U,
    0x5ab3671dU, 0x5292dbd2U, 0x33e91056U, 0x136dd647U,
    0x8c9ad761U, 0x7a37a10cU, 0x8e59f814U, 0x89eb133cU,
    0xeecea927U, 0x35b761c9U, 0xede11ce5U, 0x3c7a47b1U,
    0x599cd2dfU, 0x3f55f273U, 0x791814ceU, 0xbf73c737U,
    0xea53f7cdU, 0x5b5ffdaaU, 0x14df3d6fU, 0x867844dbU,
    0x81caaff3U, 0x3eb968c4U, 0x2c382434U, 0x5fc2a340U,
    0x72161dc3U, 0x0cbce225U, 0x8b283c49U, 0x41ff0d95U,
    0x7139a801U, 0xde080cb3U, 0x9cd8b4e4U, 0x906456c1U,
    0x617bcb84U, 0x70d532b6U, 0x74486c5cU, 0x42d0b857U,
};
static const u32 Td2[256] = {
    0xa75051f4U, 0x65537e41U, 0xa4c31a17U, 0x5e963a27U,
    0x6bcb3babU, 0x45f11f9dU, 0x58abacfaU, 0x03934be3U,
    0xfa552030U, 0x6df6ad76U, 0x769188ccU, 0x4c25f502U,
    0xd7fc4fe5U, 0xcbd7c52aU, 0x44802635U, 0xa38fb562U,
    0x5a49deb1U, 0x1b6725baU, 0x0e9845eaU, 0xc0e15dfeU,
    0x7502c32fU, 0xf012814cU, 0x97a38d46U, 0xf9c66bd3U,
    0x5fe7038fU, 0x9c951592U, 0x7aebbf6dU, 0x59da9552U,
    0x832dd4beU, 0x21d35874U, 0x692949e0U, 0xc8448ec9U,
    0x896a75c2U, 0x7978f48eU, 0x3e6b9958U, 0x71dd27b9U,
    0x4fb6bee1U, 0xad17f088U, 0xac66c920U, 0x3ab47dceU,
    0x4a1863dfU, 0x3182e51aU, 0x33609751U, 0x7f456253U,
    0x77e0b164U, 0xae84bb6bU, 0xa01cfe81U, 0x2b94f908U,
    0x68587048U, 0xfd198f45U, 0x6c8794deU, 0xf8b7527bU,
    0xd323ab73U, 0x02e2724bU, 0x8f57e31fU, 0xab2a6655U,
    0x2807b2ebU, 0xc2032fb5U, 0x7b9a86c5U, 0x08a5d337U,
    0x87f23028U, 0xa5b223bfU, 0x6aba0203U, 0x825ced16U,
    0x1c2b8acfU, 0xb492a779U, 0xf2f0f307U, 0xe2a14e69U,
    0xf4cd65daU, 0xbed50605U, 0x621fd134U, 0xfe8ac4a6U,
    0x539d342eU, 0x55a0a2f3U, 0xe132058aU, 0xeb75a4f6U,
    0xec390b83U, 0xefaa4060U, 0x9f065e71U, 0x1051bd6eU,
    0x8af93e21U, 0x063d96ddU, 0x05aedd3eU, 0xbd464de6U,
    0x8db59154U, 0x5d0571c4U, 0xd46f0406U, 0x15ff6050U,
    0xfb241998U, 0xe997d6bdU, 0x43cc8940U, 0x9e7767d9U,
    0x42bdb0e8U, 0x8b880789U, 0x5b38e719U, 0xeedb79c8U,
    0x0a47a17cU, 0x0fe97c42U, 0x1ec9f884U, 0x00000000U,
    0x86830980U, 0xed48322bU, 0x70ac1e11U, 0x724e6c5aU,
    0xfffbfd0eU, 0x38560f85U, 0xd51e3daeU, 0x3927362dU,
    0xd9640a0fU, 0xa621685cU, 0x54d19b5bU, 0x2e3a2436U,
    0x67b10c0aU, 0xe70f9357U, 0x96d2b4eeU, 0x919e1b9bU,
    0xc54f80c0U, 0x20a261dcU, 0x4b695a77U, 0x1a161c12U,
    0xba0ae293U, 0x2ae5c0a0U, 0xe0433c22U, 0x171d121bU,
    0x0d0b0e09U, 0xc7adf28bU, 0xa8b92db6U, 0xa9c8141eU,
    0x198557f1U, 0x074caf75U, 0xddbbee99U, 0x60fda37fU,
    0x269ff701U, 0xf5bc5c72U, 0x3bc54466U, 0x7e345bfbU,
    0x29768b43U, 0xc6dccb23U, 0xfc68b6edU, 0xf163b8e4U,
    0xdccad731U, 0x85104263U, 0x22401397U, 0x112084c6U,
    0x247d854aU, 0x3df8d2bbU, 0x3211aef9U, 0xa16dc729U,
    0x2f4b1d9eU, 0x30f3dcb2U, 0x52ec0d86U, 0xe3d077c1U,
    0x166c2bb3U, 0xb999a970U, 0x48fa1194U, 0x642247e9U,
    0x8cc4a8fcU, 0x3f1aa0f0U, 0x2cd8567dU, 0x90ef2233U,
    0x4ec78749U, 0xd1c1d938U, 0xa2fe8ccaU, 0x0b3698d4U,
    0x81cfa6f5U, 0xde28a57aU, 0x8e26dab7U, 0xbfa43fadU,
    0x9de42c3aU, 0x920d5078U, 0xcc9b6a5fU, 0x4662547eU,
    0x13c2f68dU, 0xb8e890d8U, 0xf75e2e39U, 0xaff582c3U,
    0x80be9f5dU, 0x937c69d0U, 0x2da96fd5U, 0x12b3cf25U,
    0x993bc8acU, 0x7da71018U, 0x636ee89cU, 0xbb7bdb3bU,
    0x7809cd26U, 0x18f46e59U, 0xb701ec9aU, 0x9aa8834fU,
    0x6e65e695U, 0xe67eaaffU, 0xcf0821bcU, 0xe8e6ef15U,
    0x9bd9bae7U, 0x36ce4a6fU, 0x09d4ea9fU, 0x7cd629b0U,
    0xb2af31a4U, 0x23312a3fU, 0x9430c6a5U, 0x66c035a2U,
    0xbc37744eU, 0xcaa6fc82U, 0xd0b0e090U, 0xd81533a7U,
    0x984af104U, 0xdaf741ecU, 0x500e7fcdU, 0xf62f1791U,
    0xd68d764dU, 0xb04d43efU, 0x4d54ccaaU, 0x04dfe496U,
    0xb5e39ed1U, 0x881b4c6aU, 0x1fb8c12cU, 0x517f4665U,
    0xea049d5eU, 0x355d018cU, 0x7473fa87U, 0x412efb0bU,
    0x1d5ab367U, 0xd25292dbU, 0x5633e910U, 0x47136dd6U,
    0x618c9ad7U, 0x0c7a37a1U, 0x148e59f8U, 0x3c89eb13U,
    0x27eecea9U, 0xc935b761U, 0xe5ede11cU, 0xb13c7a47U,
    0xdf599cd2U, 0x733f55f2U, 0xce791814U, 0x37bf73c7U,
    0xcdea53f7U, 0xaa5b5ffdU, 0x6f14df3dU, 0xdb867844U,
    0xf381caafU, 0xc43eb968U, 0x342c3824U, 0x405fc2a3U,
    0xc372161dU, 0x250cbce2U, 0x498b283cU, 0x9541ff0dU,
    0x017139a8U, 0xb3de080cU, 0xe49cd8b4U, 0xc1906456U,
    0x84617bcbU, 0xb670d532U, 0x5c74486cU, 0x5742d0b8U,
};
static const u32 Td3[256] = {
    0xf4a75051U, 0x4165537eU, 0x17a4c31aU, 0x275e963aU,
    0xab6bcb3bU, 0x9d45f11fU, 0xfa58abacU, 0xe303934bU,
    0x30fa5520U, 0x766df6adU, 0xcc769188U, 0x024c25f5U,
    0xe5d7fc4fU, 0x2acbd7c5U, 0x35448026U, 0x62a38fb5U,
    0xb15a49deU, 0xba1b6725U, 0xea0e9845U, 0xfec0e15dU,
    0x2f7502c3U, 0x4cf01281U, 0x4697a38dU, 0xd3f9c66bU,
    0x8f5fe703U, 0x929c9515U, 0x6d7aebbfU, 0x5259da95U,
    0xbe832dd4U, 0x7421d358U, 0xe0692949U, 0xc9c8448eU,
    0xc2896a75U, 0x8e7978f4U, 0x583e6b99U, 0xb971dd27U,
    0xe14fb6beU, 0x88ad17f0U, 0x20ac66c9U, 0xce3ab47dU,
    0xdf4a1863U, 0x1a3182e5U, 0x51336097U, 0x537f4562U,
    0x6477e0b1U, 0x6bae84bbU, 0x81a01cfeU, 0x082b94f9U,
    0x48685870U, 0x45fd198fU, 0xde6c8794U, 0x7bf8b752U,
    0x73d323abU, 0x4b02e272U, 0x1f8f57e3U, 0x55ab2a66U,
    0xeb2807b2U, 0xb5c2032fU, 0xc57b9a86U, 0x3708a5d3U,
    0x2887f230U, 0xbfa5b223U, 0x036aba02U, 0x16825cedU,
    0xcf1c2b8aU, 0x79b492a7U, 0x07f2f0f3U, 0x69e2a14eU,
    0xdaf4cd65U, 0x05bed506U, 0x34621fd1U, 0xa6fe8ac4U,
    0x2e539d34U, 0xf355a0a2U, 0x8ae13205U, 0xf6eb75a4U,
    0x83ec390bU, 0x60efaa40U, 0x719f065eU, 0x6e1051bdU,
    0x218af93eU, 0xdd063d96U, 0x3e05aeddU, 0xe6bd464dU,
    0x548db591U, 0xc45d0571U, 0x06d46f04U, 0x5015ff60U,
    0x98fb2419U, 0xbde997d6U, 0x4043cc89U, 0xd99e7767U,
    0xe842bdb0U, 0x898b8807U, 0x195b38e7U, 0xc8eedb79U,
    0x7c0a47a1U, 0x420fe97cU, 0x841ec9f8U, 0x00000000U,
    0x80868309U, 0x2bed4832U, 0x1170ac1eU, 0x5a724e6cU,
    0x0efffbfdU, 0x8538560fU, 0xaed51e3dU, 0x2d392736U,
    0x0fd9640aU, 0x5ca62168U, 0x5b54d19bU, 0x362e3a24U,
    0x0a67b10cU, 0x57e70f93U, 0xee96d2b4U, 0x9b919e1bU,
    0xc0c54f80U, 0xdc20a261U, 0x774b695aU, 0x121a161cU,
    0x93ba0ae2U, 0xa02ae5c0U, 0x22e0433cU, 0x1b171d12U,
    0x090d0b0eU, 0x8bc7adf2U, 0xb6a8b92dU, 0x1ea9c814U,
    0xf1198557U, 0x75074cafU, 0x99ddbbeeU, 0x7f60fda3U,
    0x01269ff7U, 0x72f5bc5cU, 0x663bc544U, 0xfb7e345bU,
    0x4329768bU, 0x23c6dccbU, 0xedfc68b6U, 0xe4f163b8U,
    0x31dccad7U, 0x63851042U, 0x97224013U, 0xc6112084U,
    0x4a247d85U, 0xbb3df8d2U, 0xf93211aeU, 0x29a16dc7U,
    0x9e2f4b1dU, 0xb230f3dcU, 0x8652ec0dU, 0xc1e3d077U,
    0xb3166c2bU, 0x70b999a9U, 0x9448fa11U, 0xe9642247U,
    0xfc8cc4a8U, 0xf03f1aa0U, 0x7d2cd856U, 0x3390ef22U,
    0x494ec787U, 0x38d1c1d9U, 0xcaa2fe8cU, 0xd40b3698U,
    0xf581cfa6U, 0x7ade28a5U, 0xb78e26daU, 0xadbfa43fU,
    0x3a9de42cU, 0x78920d50U, 0x5fcc9b6aU, 0x7e466254U,
    0x8d13c2f6U, 0xd8b8e890U, 0x39f75e2eU, 0xc3aff582U,
    0x5d80be9fU, 0xd0937c69U, 0xd52da96fU, 0x2512b3cfU,
    0xac993bc8U, 0x187da710U, 0x9c636ee8U, 0x3bbb7bdbU,
    0x267809cdU, 0x5918f46eU, 0x9ab701ecU, 0x4f9aa883U,
    0x956e65e6U, 0xffe67eaaU, 0xbccf0821U, 0x15e8e6efU,
    0xe79bd9baU, 0x6f36ce4aU, 0x9f09d4eaU, 0xb07cd629U,
    0xa4b2af31U, 0x3f23312aU, 0xa59430c6U, 0xa266c035U,
    0x4ebc3774U, 0x82caa6fcU, 0x90d0b0e0U, 0xa7d81533U,
    0x04984af1U, 0xecdaf741U, 0xcd500e7fU, 0x91f62f17U,
    0x4dd68d76U, 0xefb04d43U, 0xaa4d54ccU, 0x9604dfe4U,
    0xd1b5e39eU, 0x6a881b4cU, 0x2c1fb8c1U, 0x65517f46U,
    0x5eea049dU, 0x8c355d01U, 0x877473faU, 0x0b412efbU,
    0x671d5ab3U, 0xdbd25292U, 0x105633e9U, 0xd647136dU,
    0xd7618c9aU, 0xa10c7a37U, 0xf8148e59U, 0x133c89ebU,
    0xa927eeceU, 0x61c935b7U, 0x1ce5ede1U, 0x47b13c7aU,
    0xd2df599cU, 0xf2733f55U, 0x14ce7918U, 0xc737bf73U,
    0xf7cdea53U, 0xfdaa5b5fU, 0x3d6f14dfU, 0x44db8678U,
    0xaff381caU, 0x68c43eb9U, 0x24342c38U, 0xa3405fc2U,
    0x1dc37216U, 0xe2250cbcU, 0x3c498b28U, 0x0d9541ffU,
    0xa8017139U, 0x0cb3de08U, 0xb4e49cd8U, 0x56c19064U,
    0xcb84617bU, 0x32b670d5U, 0x6c5c7448U, 0xb85742d0U,
};
static const u8 Td4[256] = {
    0x52U, 0x09U, 0x6aU, 0xd5U, 0x30U, 0x36U, 0xa5U, 0x38U,
    0xbfU, 0x40U, 0xa3U, 0x9eU, 0x81U, 0xf3U, 0xd7U, 0xfbU,
    0x7cU, 0xe3U, 0x39U, 0x82U, 0x9bU, 0x2fU, 0xffU, 0x87U,
    0x34U, 0x8eU, 0x43U, 0x44U, 0xc4U, 0xdeU, 0xe9U, 0xcbU,
    0x54U, 0x7bU, 0x94U, 0x32U, 0xa6U, 0xc2U, 0x23U, 0x3dU,
    0xeeU, 0x4cU, 0x95U, 0x0bU, 0x42U, 0xfaU, 0xc3U, 0x4eU,
    0x08U, 0x2eU, 0xa1U, 0x66U, 0x28U, 0xd9U, 0x24U, 0xb2U,
    0x76U, 0x5bU, 0xa2U, 0x49U, 0x6dU, 0x8bU, 0xd1U, 0x25U,
    0x72U, 0xf8U, 0xf6U, 0x64U, 0x86U, 0x68U, 0x98U, 0x16U,
    0xd4U, 0xa4U, 0x5cU, 0xccU, 0x5dU, 0x65U, 0xb6U, 0x92U,
    0x6cU, 0x70U, 0x48U, 0x50U, 0xfdU, 0xedU, 0xb9U, 0xdaU,
    0x5eU, 0x15U, 0x46U, 0x57U, 0xa7U, 0x8dU, 0x9dU, 0x84U,
    0x90U, 0xd8U, 0xabU, 0x00U, 0x8cU, 0xbcU, 0xd3U, 0x0aU,
    0xf7U, 0xe4U, 0x58U, 0x05U, 0xb8U, 0xb3U, 0x45U, 0x06U,
    0xd0U, 0x2cU, 0x1eU, 0x8fU, 0xcaU, 0x3fU, 0x0fU, 0x02U,
    0xc1U, 0xafU, 0xbdU, 0x03U, 0x01U, 0x13U, 0x8aU, 0x6bU,
    0x3aU, 0x91U, 0x11U, 0x41U, 0x4fU, 0x67U, 0xdcU, 0xeaU,
    0x97U, 0xf2U, 0xcfU, 0xceU, 0xf0U, 0xb4U, 0xe6U, 0x73U,
    0x96U, 0xacU, 0x74U, 0x22U, 0xe7U, 0xadU, 0x35U, 0x85U,
    0xe2U, 0xf9U, 0x37U, 0xe8U, 0x1cU, 0x75U, 0xdfU, 0x6eU,
    0x47U, 0xf1U, 0x1aU, 0x71U, 0x1dU, 0x29U, 0xc5U, 0x89U,
    0x6fU, 0xb7U, 0x62U, 0x0eU, 0xaaU, 0x18U, 0xbeU, 0x1bU,
    0xfcU, 0x56U, 0x3eU, 0x4bU, 0xc6U, 0xd2U, 0x79U, 0x20U,
    0x9aU, 0xdbU, 0xc0U, 0xfeU, 0x78U, 0xcdU, 0x5aU, 0xf4U,
    0x1fU, 0xddU, 0xa8U, 0x33U, 0x88U, 0x07U, 0xc7U, 0x31U,
    0xb1U, 0x12U, 0x10U, 0x59U, 0x27U, 0x80U, 0xecU, 0x5fU,
    0x60U, 0x51U, 0x7fU, 0xa9U, 0x19U, 0xb5U, 0x4aU, 0x0dU,
    0x2dU, 0xe5U, 0x7aU, 0x9fU, 0x93U, 0xc9U, 0x9cU, 0xefU,
    0xa0U, 0xe0U, 0x3bU, 0x4dU, 0xaeU, 0x2aU, 0xf5U, 0xb0U,
    0xc8U, 0xebU, 0xbbU, 0x3cU, 0x83U, 0x53U, 0x99U, 0x61U,
    0x17U, 0x2bU, 0x04U, 0x7eU, 0xbaU, 0x77U, 0xd6U, 0x26U,
    0xe1U, 0x69U, 0x14U, 0x63U, 0x55U, 0x21U, 0x0cU, 0x7dU,
};
static const u32 rcon[] = {
    0x01000000, 0x02000000, 0x04000000, 0x08000000,
    0x10000000, 0x20000000, 0x40000000, 0x80000000,
    0x1B000000, 0x36000000, /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */
};

/**
 * Expand the cipher key into the encryption key schedule.
 */
int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
                        AES_KEY *key)
{

    u32 *rk;
    int i = 0;
    u32 temp;

    if (!userKey || !key)
        return -1;
    if (bits != 128 && bits != 192 && bits != 256)
        return -2;

    rk = key->rd_key;

    if (bits == 128)
        key->rounds = 10;
    else if (bits == 192)
        key->rounds = 12;
    else
        key->rounds = 14;

    rk[0] = GETU32(userKey     );
    rk[1] = GETU32(userKey +  4);
    rk[2] = GETU32(userKey +  8);
    rk[3] = GETU32(userKey + 12);
    if (bits == 128) {
        while (1) {
            temp  = rk[3];
            rk[4] = rk[0] ^
                (Te2[(temp >> 16) & 0xff] & 0xff000000) ^
                (Te3[(temp >>  8) & 0xff] & 0x00ff0000) ^
                (Te0[(temp      ) & 0xff] & 0x0000ff00) ^
                (Te1[(temp >> 24)       ] & 0x000000ff) ^
                rcon[i];
            rk[5] = rk[1] ^ rk[4];
            rk[6] = rk[2] ^ rk[5];
            rk[7] = rk[3] ^ rk[6];
            if (++i == 10) {
                return 0;
            }
            rk += 4;
        }
    }
    rk[4] = GETU32(userKey + 16);
    rk[5] = GETU32(userKey + 20);
    if (bits == 192) {
        while (1) {
            temp = rk[ 5];
            rk[ 6] = rk[ 0] ^
                (Te2[(temp >> 16) & 0xff] & 0xff000000) ^
                (Te3[(temp >>  8) & 0xff] & 0x00ff0000) ^
                (Te0[(temp      ) & 0xff] & 0x0000ff00) ^
                (Te1[(temp >> 24)       ] & 0x000000ff) ^
                rcon[i];
            rk[ 7] = rk[ 1] ^ rk[ 6];
            rk[ 8] = rk[ 2] ^ rk[ 7];
            rk[ 9] = rk[ 3] ^ rk[ 8];
            if (++i == 8) {
                return 0;
            }
            rk[10] = rk[ 4] ^ rk[ 9];
            rk[11] = rk[ 5] ^ rk[10];
            rk += 6;
        }
    }
    rk[6] = GETU32(userKey + 24);
    rk[7] = GETU32(userKey + 28);
    if (bits == 256) {
        while (1) {
            temp = rk[ 7];
            rk[ 8] = rk[ 0] ^
                (Te2[(temp >> 16) & 0xff] & 0xff000000) ^
                (Te3[(temp >>  8) & 0xff] & 0x00ff0000) ^
                (Te0[(temp      ) & 0xff] & 0x0000ff00) ^
                (Te1[(temp >> 24)       ] & 0x000000ff) ^
                rcon[i];
            rk[ 9] = rk[ 1] ^ rk[ 8];
            rk[10] = rk[ 2] ^ rk[ 9];
            rk[11] = rk[ 3] ^ rk[10];
            if (++i == 7) {
                return 0;
            }
            temp = rk[11];
            rk[12] = rk[ 4] ^
                (Te2[(temp >> 24)       ] & 0xff000000) ^
                (Te3[(temp >> 16) & 0xff] & 0x00ff0000) ^
                (Te0[(temp >>  8) & 0xff] & 0x0000ff00) ^
                (Te1[(temp      ) & 0xff] & 0x000000ff);
            rk[13] = rk[ 5] ^ rk[12];
            rk[14] = rk[ 6] ^ rk[13];
            rk[15] = rk[ 7] ^ rk[14];

            rk += 8;
            }
    }
    return 0;
}

/**
 * Expand the cipher key into the decryption key schedule.
 */
int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
                        AES_KEY *key)
{

    u32 *rk;
    int i, j, status;
    u32 temp;

    /* first, start with an encryption schedule */
    status = AES_set_encrypt_key(userKey, bits, key);
    if (status < 0)
        return status;

    rk = key->rd_key;

    /* invert the order of the round keys: */
    for (i = 0, j = 4*(key->rounds); i < j; i += 4, j -= 4) {
        temp = rk[i    ]; rk[i    ] = rk[j    ]; rk[j    ] = temp;
        temp = rk[i + 1]; rk[i + 1] = rk[j + 1]; rk[j + 1] = temp;
        temp = rk[i + 2]; rk[i + 2] = rk[j + 2]; rk[j + 2] = temp;
        temp = rk[i + 3]; rk[i + 3] = rk[j + 3]; rk[j + 3] = temp;
    }
    /* apply the inverse MixColumn transform to all round keys but the first and the last: */
    for (i = 1; i < (key->rounds); i++) {
        rk += 4;
        rk[0] =
            Td0[Te1[(rk[0] >> 24)       ] & 0xff] ^
            Td1[Te1[(rk[0] >> 16) & 0xff] & 0xff] ^
            Td2[Te1[(rk[0] >>  8) & 0xff] & 0xff] ^
            Td3[Te1[(rk[0]      ) & 0xff] & 0xff];
        rk[1] =
            Td0[Te1[(rk[1] >> 24)       ] & 0xff] ^
            Td1[Te1[(rk[1] >> 16) & 0xff] & 0xff] ^
            Td2[Te1[(rk[1] >>  8) & 0xff] & 0xff] ^
            Td3[Te1[(rk[1]      ) & 0xff] & 0xff];
        rk[2] =
            Td0[Te1[(rk[2] >> 24)       ] & 0xff] ^
            Td1[Te1[(rk[2] >> 16) & 0xff] & 0xff] ^
            Td2[Te1[(rk[2] >>  8) & 0xff] & 0xff] ^
            Td3[Te1[(rk[2]      ) & 0xff] & 0xff];
        rk[3] =
            Td0[Te1[(rk[3] >> 24)       ] & 0xff] ^
            Td1[Te1[(rk[3] >> 16) & 0xff] & 0xff] ^
            Td2[Te1[(rk[3] >>  8) & 0xff] & 0xff] ^
            Td3[Te1[(rk[3]      ) & 0xff] & 0xff];
    }
    return 0;
}

/*
 * Encrypt a single block
 * in and out can overlap
 */
void AES_encrypt(const unsigned char *in, unsigned char *out,
                 const AES_KEY *key) {

    const u32 *rk;
    u32 s0, s1, s2, s3, t0, t1, t2, t3;
#ifndef FULL_UNROLL
    int r;
#endif /* ?FULL_UNROLL */

    assert(in && out && key);
    rk = key->rd_key;

    /*
     * map byte array block to cipher state
     * and add initial round key:
     */
    s0 = GETU32(in     ) ^ rk[0];
    s1 = GETU32(in +  4) ^ rk[1];
    s2 = GETU32(in +  8) ^ rk[2];
    s3 = GETU32(in + 12) ^ rk[3];
#ifdef FULL_UNROLL
    /* round 1: */
    t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[ 4];
    t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[ 5];
    t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[ 6];
    t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[ 7];
    /* round 2: */
    s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[ 8];
    s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[ 9];
    s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[10];
    s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[11];
    /* round 3: */
    t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[12];
    t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[13];
    t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[14];
    t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[15];
    /* round 4: */
    s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[16];
    s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[17];
    s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[18];
    s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[19];
    /* round 5: */
    t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[20];
    t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[21];
    t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[22];
    t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[23];
    /* round 6: */
    s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[24];
    s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[25];
    s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[26];
    s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[27];
    /* round 7: */
    t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[28];
    t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[29];
    t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[30];
    t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[31];
    /* round 8: */
    s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[32];
    s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[33];
    s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[34];
    s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[35];
    /* round 9: */
    t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[36];
    t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[37];
    t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[38];
    t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[39];
    if (key->rounds > 10) {
        /* round 10: */
        s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[40];
        s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[41];
        s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[42];
        s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[43];
        /* round 11: */
        t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[44];
        t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[45];
        t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[46];
        t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[47];
        if (key->rounds > 12) {
            /* round 12: */
            s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[48];
            s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[49];
            s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[50];
            s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[51];
            /* round 13: */
            t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[52];
            t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[53];
            t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[54];
            t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[55];
        }
    }
    rk += key->rounds << 2;
#else  /* !FULL_UNROLL */
    /*
     * Nr - 1 full rounds:
     */
    r = key->rounds >> 1;
    for (;;) {
        t0 =
            Te0[(s0 >> 24)       ] ^
            Te1[(s1 >> 16) & 0xff] ^
            Te2[(s2 >>  8) & 0xff] ^
            Te3[(s3      ) & 0xff] ^
            rk[4];
        t1 =
            Te0[(s1 >> 24)       ] ^
            Te1[(s2 >> 16) & 0xff] ^
            Te2[(s3 >>  8) & 0xff] ^
            Te3[(s0      ) & 0xff] ^
            rk[5];
        t2 =
            Te0[(s2 >> 24)       ] ^
            Te1[(s3 >> 16) & 0xff] ^
            Te2[(s0 >>  8) & 0xff] ^
            Te3[(s1      ) & 0xff] ^
            rk[6];
        t3 =
            Te0[(s3 >> 24)       ] ^
            Te1[(s0 >> 16) & 0xff] ^
            Te2[(s1 >>  8) & 0xff] ^
            Te3[(s2      ) & 0xff] ^
            rk[7];

        rk += 8;
        if (--r == 0) {
            break;
        }

        s0 =
            Te0[(t0 >> 24)       ] ^
            Te1[(t1 >> 16) & 0xff] ^
            Te2[(t2 >>  8) & 0xff] ^
            Te3[(t3      ) & 0xff] ^
            rk[0];
        s1 =
            Te0[(t1 >> 24)       ] ^
            Te1[(t2 >> 16) & 0xff] ^
            Te2[(t3 >>  8) & 0xff] ^
            Te3[(t0      ) & 0xff] ^
            rk[1];
        s2 =
            Te0[(t2 >> 24)       ] ^
            Te1[(t3 >> 16) & 0xff] ^
            Te2[(t0 >>  8) & 0xff] ^
            Te3[(t1      ) & 0xff] ^
            rk[2];
        s3 =
            Te0[(t3 >> 24)       ] ^
            Te1[(t0 >> 16) & 0xff] ^
            Te2[(t1 >>  8) & 0xff] ^
            Te3[(t2      ) & 0xff] ^
            rk[3];
    }
#endif /* ?FULL_UNROLL */
    /*
     * apply last round and
     * map cipher state to byte array block:
     */
    s0 =
        (Te2[(t0 >> 24)       ] & 0xff000000) ^
        (Te3[(t1 >> 16) & 0xff] & 0x00ff0000) ^
        (Te0[(t2 >>  8) & 0xff] & 0x0000ff00) ^
        (Te1[(t3      ) & 0xff] & 0x000000ff) ^
        rk[0];
    PUTU32(out     , s0);
    s1 =
        (Te2[(t1 >> 24)       ] & 0xff000000) ^
        (Te3[(t2 >> 16) & 0xff] & 0x00ff0000) ^
        (Te0[(t3 >>  8) & 0xff] & 0x0000ff00) ^
        (Te1[(t0      ) & 0xff] & 0x000000ff) ^
        rk[1];
    PUTU32(out +  4, s1);
    s2 =
        (Te2[(t2 >> 24)       ] & 0xff000000) ^
        (Te3[(t3 >> 16) & 0xff] & 0x00ff0000) ^
        (Te0[(t0 >>  8) & 0xff] & 0x0000ff00) ^
        (Te1[(t1      ) & 0xff] & 0x000000ff) ^
        rk[2];
    PUTU32(out +  8, s2);
    s3 =
        (Te2[(t3 >> 24)       ] & 0xff000000) ^
        (Te3[(t0 >> 16) & 0xff] & 0x00ff0000) ^
        (Te0[(t1 >>  8) & 0xff] & 0x0000ff00) ^
        (Te1[(t2      ) & 0xff] & 0x000000ff) ^
        rk[3];
    PUTU32(out + 12, s3);
}

/*
 * Decrypt a single block
 * in and out can overlap
 */
void AES_decrypt(const unsigned char *in, unsigned char *out,
                 const AES_KEY *key)
{

    const u32 *rk;
    u32 s0, s1, s2, s3, t0, t1, t2, t3;
#ifndef FULL_UNROLL
    int r;
#endif /* ?FULL_UNROLL */

    assert(in && out && key);
    rk = key->rd_key;

    /*
     * map byte array block to cipher state
     * and add initial round key:
     */
    s0 = GETU32(in     ) ^ rk[0];
    s1 = GETU32(in +  4) ^ rk[1];
    s2 = GETU32(in +  8) ^ rk[2];
    s3 = GETU32(in + 12) ^ rk[3];
#ifdef FULL_UNROLL
    /* round 1: */
    t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >>  8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[ 4];
    t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >>  8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[ 5];
    t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >>  8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[ 6];
    t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[ 7];
    /* round 2: */
    s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >>  8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[ 8];
    s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >>  8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[ 9];
    s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >>  8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[10];
    s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >>  8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[11];
    /* round 3: */
    t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >>  8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[12];
    t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >>  8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[13];
    t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >>  8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[14];
    t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[15];
    /* round 4: */
    s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >>  8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[16];
    s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >>  8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[17];
    s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >>  8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[18];
    s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >>  8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[19];
    /* round 5: */
    t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >>  8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[20];
    t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >>  8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[21];
    t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >>  8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[22];
    t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[23];
    /* round 6: */
    s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >>  8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[24];
    s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >>  8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[25];
    s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >>  8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[26];
    s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >>  8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[27];
    /* round 7: */
    t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >>  8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[28];
    t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >>  8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[29];
    t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >>  8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[30];
    t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[31];
    /* round 8: */
    s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >>  8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[32];
    s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >>  8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[33];
    s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >>  8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[34];
    s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >>  8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[35];
    /* round 9: */
    t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >>  8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[36];
    t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >>  8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[37];
    t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >>  8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[38];
    t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[39];
    if (key->rounds > 10) {
        /* round 10: */
        s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >>  8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[40];
        s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >>  8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[41];
        s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >>  8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[42];
        s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >>  8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[43];
        /* round 11: */
        t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >>  8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[44];
        t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >>  8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[45];
        t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >>  8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[46];
        t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[47];
        if (key->rounds > 12) {
            /* round 12: */
            s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >>  8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[48];
            s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >>  8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[49];
            s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >>  8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[50];
            s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >>  8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[51];
            /* round 13: */
            t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >>  8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[52];
            t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >>  8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[53];
            t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >>  8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[54];
            t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[55];
        }
    }
    rk += key->rounds << 2;
#else  /* !FULL_UNROLL */
    /*
     * Nr - 1 full rounds:
     */
    r = key->rounds >> 1;
    for (;;) {
        t0 =
            Td0[(s0 >> 24)       ] ^
            Td1[(s3 >> 16) & 0xff] ^
            Td2[(s2 >>  8) & 0xff] ^
            Td3[(s1      ) & 0xff] ^
            rk[4];
        t1 =
            Td0[(s1 >> 24)       ] ^
            Td1[(s0 >> 16) & 0xff] ^
            Td2[(s3 >>  8) & 0xff] ^
            Td3[(s2      ) & 0xff] ^
            rk[5];
        t2 =
            Td0[(s2 >> 24)       ] ^
            Td1[(s1 >> 16) & 0xff] ^
            Td2[(s0 >>  8) & 0xff] ^
            Td3[(s3      ) & 0xff] ^
            rk[6];
        t3 =
            Td0[(s3 >> 24)       ] ^
            Td1[(s2 >> 16) & 0xff] ^
            Td2[(s1 >>  8) & 0xff] ^
            Td3[(s0      ) & 0xff] ^
            rk[7];

        rk += 8;
        if (--r == 0) {
            break;
        }

        s0 =
            Td0[(t0 >> 24)       ] ^
            Td1[(t3 >> 16) & 0xff] ^
            Td2[(t2 >>  8) & 0xff] ^
            Td3[(t1      ) & 0xff] ^
            rk[0];
        s1 =
            Td0[(t1 >> 24)       ] ^
            Td1[(t0 >> 16) & 0xff] ^
            Td2[(t3 >>  8) & 0xff] ^
            Td3[(t2      ) & 0xff] ^
            rk[1];
        s2 =
            Td0[(t2 >> 24)       ] ^
            Td1[(t1 >> 16) & 0xff] ^
            Td2[(t0 >>  8) & 0xff] ^
            Td3[(t3      ) & 0xff] ^
            rk[2];
        s3 =
            Td0[(t3 >> 24)       ] ^
            Td1[(t2 >> 16) & 0xff] ^
            Td2[(t1 >>  8) & 0xff] ^
            Td3[(t0      ) & 0xff] ^
            rk[3];
    }
#endif /* ?FULL_UNROLL */
    /*
     * apply last round and
     * map cipher state to byte array block:
     */
    s0 =
        ((u32)Td4[(t0 >> 24)       ] << 24) ^
        ((u32)Td4[(t3 >> 16) & 0xff] << 16) ^
        ((u32)Td4[(t2 >>  8) & 0xff] <<  8) ^
        ((u32)Td4[(t1      ) & 0xff])       ^
        rk[0];
    PUTU32(out     , s0);
    s1 =
        ((u32)Td4[(t1 >> 24)       ] << 24) ^
        ((u32)Td4[(t0 >> 16) & 0xff] << 16) ^
        ((u32)Td4[(t3 >>  8) & 0xff] <<  8) ^
        ((u32)Td4[(t2      ) & 0xff])       ^
        rk[1];
    PUTU32(out +  4, s1);
    s2 =
        ((u32)Td4[(t2 >> 24)       ] << 24) ^
        ((u32)Td4[(t1 >> 16) & 0xff] << 16) ^
        ((u32)Td4[(t0 >>  8) & 0xff] <<  8) ^
        ((u32)Td4[(t3      ) & 0xff])       ^
        rk[2];
    PUTU32(out +  8, s2);
    s3 =
        ((u32)Td4[(t3 >> 24)       ] << 24) ^
        ((u32)Td4[(t2 >> 16) & 0xff] << 16) ^
        ((u32)Td4[(t1 >>  8) & 0xff] <<  8) ^
        ((u32)Td4[(t0      ) & 0xff])       ^
        rk[3];
    PUTU32(out + 12, s3);
}

#else /* AES_ASM */

static const u8 Te4[256] = {
    0x63U, 0x7cU, 0x77U, 0x7bU, 0xf2U, 0x6bU, 0x6fU, 0xc5U,
    0x30U, 0x01U, 0x67U, 0x2bU, 0xfeU, 0xd7U, 0xabU, 0x76U,
    0xcaU, 0x82U, 0xc9U, 0x7dU, 0xfaU, 0x59U, 0x47U, 0xf0U,
    0xadU, 0xd4U, 0xa2U, 0xafU, 0x9cU, 0xa4U, 0x72U, 0xc0U,
    0xb7U, 0xfdU, 0x93U, 0x26U, 0x36U, 0x3fU, 0xf7U, 0xccU,
    0x34U, 0xa5U, 0xe5U, 0xf1U, 0x71U, 0xd8U, 0x31U, 0x15U,
    0x04U, 0xc7U, 0x23U, 0xc3U, 0x18U, 0x96U, 0x05U, 0x9aU,
    0x07U, 0x12U, 0x80U, 0xe2U, 0xebU, 0x27U, 0xb2U, 0x75U,
    0x09U, 0x83U, 0x2cU, 0x1aU, 0x1bU, 0x6eU, 0x5aU, 0xa0U,
    0x52U, 0x3bU, 0xd6U, 0xb3U, 0x29U, 0xe3U, 0x2fU, 0x84U,
    0x53U, 0xd1U, 0x00U, 0xedU, 0x20U, 0xfcU, 0xb1U, 0x5bU,
    0x6aU, 0xcbU, 0xbeU, 0x39U, 0x4aU, 0x4cU, 0x58U, 0xcfU,
    0xd0U, 0xefU, 0xaaU, 0xfbU, 0x43U, 0x4dU, 0x33U, 0x85U,
    0x45U, 0xf9U, 0x02U, 0x7fU, 0x50U, 0x3cU, 0x9fU, 0xa8U,
    0x51U, 0xa3U, 0x40U, 0x8fU, 0x92U, 0x9dU, 0x38U, 0xf5U,
    0xbcU, 0xb6U, 0xdaU, 0x21U, 0x10U, 0xffU, 0xf3U, 0xd2U,
    0xcdU, 0x0cU, 0x13U, 0xecU, 0x5fU, 0x97U, 0x44U, 0x17U,
    0xc4U, 0xa7U, 0x7eU, 0x3dU, 0x64U, 0x5dU, 0x19U, 0x73U,
    0x60U, 0x81U, 0x4fU, 0xdcU, 0x22U, 0x2aU, 0x90U, 0x88U,
    0x46U, 0xeeU, 0xb8U, 0x14U, 0xdeU, 0x5eU, 0x0bU, 0xdbU,
    0xe0U, 0x32U, 0x3aU, 0x0aU, 0x49U, 0x06U, 0x24U, 0x5cU,
    0xc2U, 0xd3U, 0xacU, 0x62U, 0x91U, 0x95U, 0xe4U, 0x79U,
    0xe7U, 0xc8U, 0x37U, 0x6dU, 0x8dU, 0xd5U, 0x4eU, 0xa9U,
    0x6cU, 0x56U, 0xf4U, 0xeaU, 0x65U, 0x7aU, 0xaeU, 0x08U,
    0xbaU, 0x78U, 0x25U, 0x2eU, 0x1cU, 0xa6U, 0xb4U, 0xc6U,
    0xe8U, 0xddU, 0x74U, 0x1fU, 0x4bU, 0xbdU, 0x8bU, 0x8aU,
    0x70U, 0x3eU, 0xb5U, 0x66U, 0x48U, 0x03U, 0xf6U, 0x0eU,
    0x61U, 0x35U, 0x57U, 0xb9U, 0x86U, 0xc1U, 0x1dU, 0x9eU,
    0xe1U, 0xf8U, 0x98U, 0x11U, 0x69U, 0xd9U, 0x8eU, 0x94U,
    0x9bU, 0x1eU, 0x87U, 0xe9U, 0xceU, 0x55U, 0x28U, 0xdfU,
    0x8cU, 0xa1U, 0x89U, 0x0dU, 0xbfU, 0xe6U, 0x42U, 0x68U,
    0x41U, 0x99U, 0x2dU, 0x0fU, 0xb0U, 0x54U, 0xbbU, 0x16U
};
static const u32 rcon[] = {
    0x01000000, 0x02000000, 0x04000000, 0x08000000,
    0x10000000, 0x20000000, 0x40000000, 0x80000000,
    0x1B000000, 0x36000000, /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */
};

/**
 * Expand the cipher key into the encryption key schedule.
 */
int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
                        AES_KEY *key)
{
    u32 *rk;
    int i = 0;
    u32 temp;

    if (!userKey || !key)
        return -1;
    if (bits != 128 && bits != 192 && bits != 256)
        return -2;

    rk = key->rd_key;

    if (bits == 128)
        key->rounds = 10;
    else if (bits == 192)
        key->rounds = 12;
    else
        key->rounds = 14;

    rk[0] = GETU32(userKey     );
    rk[1] = GETU32(userKey +  4);
    rk[2] = GETU32(userKey +  8);
    rk[3] = GETU32(userKey + 12);
    if (bits == 128) {
        while (1) {
            temp  = rk[3];
            rk[4] = rk[0] ^
                ((u32)Te4[(temp >> 16) & 0xff] << 24) ^
                ((u32)Te4[(temp >>  8) & 0xff] << 16) ^
                ((u32)Te4[(temp      ) & 0xff] << 8) ^
                ((u32)Te4[(temp >> 24)       ]) ^
                rcon[i];
            rk[5] = rk[1] ^ rk[4];
            rk[6] = rk[2] ^ rk[5];
            rk[7] = rk[3] ^ rk[6];
            if (++i == 10) {
                return 0;
            }
            rk += 4;
        }
    }
    rk[4] = GETU32(userKey + 16);
    rk[5] = GETU32(userKey + 20);
    if (bits == 192) {
        while (1) {
            temp = rk[ 5];
            rk[ 6] = rk[ 0] ^
                ((u32)Te4[(temp >> 16) & 0xff] << 24) ^
                ((u32)Te4[(temp >>  8) & 0xff] << 16) ^
                ((u32)Te4[(temp      ) & 0xff] << 8) ^
                ((u32)Te4[(temp >> 24)       ]) ^
                rcon[i];
            rk[ 7] = rk[ 1] ^ rk[ 6];
            rk[ 8] = rk[ 2] ^ rk[ 7];
            rk[ 9] = rk[ 3] ^ rk[ 8];
            if (++i == 8) {
                return 0;
            }
            rk[10] = rk[ 4] ^ rk[ 9];
            rk[11] = rk[ 5] ^ rk[10];
            rk += 6;
        }
    }
    rk[6] = GETU32(userKey + 24);
    rk[7] = GETU32(userKey + 28);
    if (bits == 256) {
        while (1) {
            temp = rk[ 7];
            rk[ 8] = rk[ 0] ^
                ((u32)Te4[(temp >> 16) & 0xff] << 24) ^
                ((u32)Te4[(temp >>  8) & 0xff] << 16) ^
                ((u32)Te4[(temp      ) & 0xff] << 8) ^
                ((u32)Te4[(temp >> 24)       ]) ^
                rcon[i];
            rk[ 9] = rk[ 1] ^ rk[ 8];
            rk[10] = rk[ 2] ^ rk[ 9];
            rk[11] = rk[ 3] ^ rk[10];
            if (++i == 7) {
                return 0;
            }
            temp = rk[11];
            rk[12] = rk[ 4] ^
                ((u32)Te4[(temp >> 24)       ] << 24) ^
                ((u32)Te4[(temp >> 16) & 0xff] << 16) ^
                ((u32)Te4[(temp >>  8) & 0xff] << 8) ^
                ((u32)Te4[(temp      ) & 0xff]);
            rk[13] = rk[ 5] ^ rk[12];
            rk[14] = rk[ 6] ^ rk[13];
            rk[15] = rk[ 7] ^ rk[14];

            rk += 8;
        }
    }
    return 0;
}

/**
 * Expand the cipher key into the decryption key schedule.
 */
int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
                        AES_KEY *key)
{

    u32 *rk;
    int i, j, status;
    u32 temp;

    /* first, start with an encryption schedule */
    status = AES_set_encrypt_key(userKey, bits, key);
    if (status < 0)
        return status;

    rk = key->rd_key;

    /* invert the order of the round keys: */
    for (i = 0, j = 4*(key->rounds); i < j; i += 4, j -= 4) {
        temp = rk[i    ]; rk[i    ] = rk[j    ]; rk[j    ] = temp;
        temp = rk[i + 1]; rk[i + 1] = rk[j + 1]; rk[j + 1] = temp;
        temp = rk[i + 2]; rk[i + 2] = rk[j + 2]; rk[j + 2] = temp;
        temp = rk[i + 3]; rk[i + 3] = rk[j + 3]; rk[j + 3] = temp;
    }
    /* apply the inverse MixColumn transform to all round keys but the first and the last: */
    for (i = 1; i < (key->rounds); i++) {
        rk += 4;
        for (j = 0; j < 4; j++) {
            u32 tp1, tp2, tp4, tp8, tp9, tpb, tpd, tpe, m;

            tp1 = rk[j];
            m = tp1 & 0x80808080;
            tp2 = ((tp1 & 0x7f7f7f7f) << 1) ^
                ((m - (m >> 7)) & 0x1b1b1b1b);
            m = tp2 & 0x80808080;
            tp4 = ((tp2 & 0x7f7f7f7f) << 1) ^
                ((m - (m >> 7)) & 0x1b1b1b1b);
            m = tp4 & 0x80808080;
            tp8 = ((tp4 & 0x7f7f7f7f) << 1) ^
                ((m - (m >> 7)) & 0x1b1b1b1b);
            tp9 = tp8 ^ tp1;
            tpb = tp9 ^ tp2;
            tpd = tp9 ^ tp4;
            tpe = tp8 ^ tp4 ^ tp2;
#if defined(ROTATE)
            rk[j] = tpe ^ ROTATE(tpd,16) ^
                ROTATE(tp9,24) ^ ROTATE(tpb,8);
#else
            rk[j] = tpe ^ (tpd >> 16) ^ (tpd << 16) ^
                (tp9 >> 8) ^ (tp9 << 24) ^
                (tpb >> 24) ^ (tpb << 8);
#endif
        }
    }
    return 0;
}

#endif /* AES_ASM */